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Finding the Fourth Proportional to 508,721.70, 763,082.55 and 479,691.30

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Solution

The fourth proportional to 508,721.70, 763,082.55 and 479,691.30 is: 719,536.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,721.70 : 763,082.55 = 479,691.30 : x
  2. Step 2: Convert to fraction form
    508,721.70/763,082.55 = 479,691.30/x
  3. Step 3: Cross multiply
    508,721.70x = 763,082.55 × 479,691.30
  4. Step 4: Simplify right side
    508,721.70x = 366,044,060,416.82
  5. Step 5: Solve for x
    x = 366,044,060,416.82/508,721.70
  6. Step 6: Final answer
    x = 719,536.95

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.