Home / 500,211.66-689,663.79-397,996.14

Finding the Fourth Proportional to 500,211.66, 689,663.79 and 397,996.14

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Solution

The fourth proportional to 500,211.66, 689,663.79 and 397,996.14 is: 548,734.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,211.66 : 689,663.79 = 397,996.14 : x
  2. Step 2: Convert to fraction form
    500,211.66/689,663.79 = 397,996.14/x
  3. Step 3: Cross multiply
    500,211.66x = 689,663.79 × 397,996.14
  4. Step 4: Simplify right side
    500,211.66x = 274,483,526,317.77
  5. Step 5: Solve for x
    x = 274,483,526,317.77/500,211.66
  6. Step 6: Final answer
    x = 548,734.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.