The main factor determining the success of a relationship is the way of interaction in a pair. It is important how you communicate with each other, negotiate. You need to support each other's dreams, respect your partner and believe in his capabilities.
If you want to find a soulmate, you create your own compatibility. There is no magic formula or algorithm that would help you build a happy relationship.
When you meet a potential partner, try to understand if he shares your aspirations, believes in your dreams and accepts you entirely. If the answer to these questions is yes, you have found your soulmate.