Here are the ratios on CME website( but there must a problem IMO ):
http://www.cmegroup.com/trading/agricultural/grain-and-oilseed/soybean_performance_bonds.html
5-1-1 for crush makes no sense. I guess it's 1-1-1 ( soy-meal-oil)for the small one. The exact one is 10-11-9 , processing wise , not volatility wise.
If you want the exact ratios for soy/meal and soy/oïl, make a $ based average daily range values for both. I would say around 3/4 for soy/meal and 3/5 for soy/oïl( just a guess ).