Home / 498,463.28-687,891.12-272,110.40

Finding the Fourth Proportional to 498,463.28, 687,891.12 and 272,110.40

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Solution

The fourth proportional to 498,463.28, 687,891.12 and 272,110.40 is: 375,518.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,463.28 : 687,891.12 = 272,110.40 : x
  2. Step 2: Convert to fraction form
    498,463.28/687,891.12 = 272,110.40/x
  3. Step 3: Cross multiply
    498,463.28x = 687,891.12 × 272,110.40
  4. Step 4: Simplify right side
    498,463.28x = 187,182,327,819.65
  5. Step 5: Solve for x
    x = 187,182,327,819.65/498,463.28
  6. Step 6: Final answer
    x = 375,518.79

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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.