Spread your credence across moral views, choose how to normalise them, and read off the WORST:BEST ratio R. Cutting the chance of WORST by one percentage point is worth raising the chance of BEST by R points. Extinction is the zero point on every view.
These don’t give a ratio. Each view controls a share of resources equal to your credence in it, and spends it as its own ratio says. In this model, Nash bargaining with credences as weights gives the same allocation.