Home / 498,489.06-687,911.40-272,134.56

Finding the Fourth Proportional to 498,489.06, 687,911.40 and 272,134.56

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Solution

The fourth proportional to 498,489.06, 687,911.40 and 272,134.56 is: 375,543.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,489.06 : 687,911.40 = 272,134.56 : x
  2. Step 2: Convert to fraction form
    498,489.06/687,911.40 = 272,134.56/x
  3. Step 3: Cross multiply
    498,489.06x = 687,911.40 × 272,134.56
  4. Step 4: Simplify right side
    498,489.06x = 187,204,466,838.32
  5. Step 5: Solve for x
    x = 187,204,466,838.32/498,489.06
  6. Step 6: Final answer
    x = 375,543.78

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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.