There are close relations between them in spite of the differences. Normally, people who have high social status will also have high economic status. The financial status of the lower castes will below. But this situation has changed since the 19th century. The strictness with Jati and profession has been reduced. The religious and ritual control over professions could not be imposed in the changed situation. Now people can choose any job they like without any caste consideration. Now people change jobs as they like.
The relation between Jati and economic power has also weakened. The situation is quite different from the one some 50 or 60 years ago. There are rich people and poor people in all Castes. However, if we look very carefully we can still see that the relation between social class and economic status has some relevance.