In steps...
Use profit margin and net income to derive total Sales (Profit Margin = Net Income / Sales)
Then with Sales and your Capital Intensity metric you can determine total Assets (Cap Intens = Assets / Sales)
Next, you can determine Equity, using total Assets and the Debt / Equity ratio. (Hint: In the debt/equity ratio, re-write "debt" as "assets minus equity"; so your Debt/Equity ratio becomes (A - E) / E [with A and E representing Assets and Equity, respectively])
Then remember that Return on Equity (ROE) = Net Income / Equity.
The ratio of Dividends to Net Income is the "payout rate", and (1 - payout rate) = the "plowback rate".
To wrap it up, SGR is just the product of ROE and Plowback Rate: SGR = ROE x PB
You furnish the algebraic manipulations at each step, and you'll have it wrapped up pronto.
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