Metrics similar to Equity / Total Assets in the risk category include:
Book Value / Market Cap - Compares a firm's common equity listed on the balance to the market value of equity.
Total Enterprise Value (TEV) - The total value of a firm including claims of creditors (secured and unsecured) and shareholders (preferred and common). Unlikely Enterprise Value (EV), Total Enterprise Value includes value related to the non-operating assets of the business.