Looking for suggestions on fairest way to structure partnership

[Pierre Pine]

I have two friends who would like to partner up on a multi-unit property.  One has much more capital to put in for a down payment than myself and the other friend, and he is not opposed to utilizing his greater capital to get us into a larger property.  For example, he would be willing to put in half of the down payment, if we are trying to get a property where the other partner and I could only afford to put in a quarter of the down payment.  However, we would all still like to have an equal split of profits and costs after the purchase.  So I am looking for suggestions on a fair way to structure such a partnership, or is the only way to do it, to have him get 50% of the profits, while me and the other guy get 25% each?  Thanks for any suggestions.