So, lets see what Jupiter can do in 4th house without any conjunction or aspect from any other planet. 1st lets see what these 2 things represent --
Jupiter is the most benefic planet and it represents all the auspicious things like Knowledge, Wisdom, Law, Guru, Spirituality, Religion, Philosophy, Literature, Elderly People. For a girl, Jupiter also represents Husband.
4th house represents your home, home environment, homeland, mother, nourishment, childhood friends, peace of mind, conveniences etc.
Jupiter in 4th house of home, gives the person very big home, as Jupiter represents expansion of things. It also gives lots of conveniences and vehicles in home. It also gives a strong bond with mother, like mother becomes Guru of a person. The person himself is considered as Guru/Learned Person in home or home-town and people ask for his advice.
From 4th house, Jupiter's aspect goes to 8th house of secrecy, occult, in-laws and joint assets with spouse etc. So here, not only person gets the knowledge of occult, secrecy (as Jupiter is knowledge and wisdom) but it also gives a person benefits from in-laws. Spouse brings wealth in life.
Jupiter's next aspect goes to 10th house of career. As Jupiter is divine teacher, it can make a person a very good teacher. A career in counselling and teaching is certainly on. As 4th house also represents land and real estate, Career in Real Estate can be a good option too.
Jupiter's last aspect goes to 12th house of Spirituality and Isolation. It shows the need to be spiritually inclined in life.
Hope this helps. Tomorrow, Jupiter in 5th house.
Vishal S Saxena - Astrologer