b. Disaggregate ROA into Profit Margin and Asset Turnover components. Profit Margin. Apply DuPont Disaggregation of ROE Selected balance sheet and income statement information for Facebook Inc. follows. a. Compute ROE and disaggregate the ratio into its DuPont components of ROA and financial leverage. 2018 Financial Leverage. b. Disaggregate ROA into Profit Margin and Asset Turnover components. Profit Margin