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Finding the Fourth Proportional to 498,649.57, 747,974.35 and 124,672.57

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Solution

The fourth proportional to 498,649.57, 747,974.35 and 124,672.57 is: 187,008.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,649.57 : 747,974.35 = 124,672.57 : x
  2. Step 2: Convert to fraction form
    498,649.57/747,974.35 = 124,672.57/x
  3. Step 3: Cross multiply
    498,649.57x = 747,974.35 × 124,672.57
  4. Step 4: Simplify right side
    498,649.57x = 93,251,880,145.34
  5. Step 5: Solve for x
    x = 93,251,880,145.34/498,649.57
  6. Step 6: Final answer
    x = 187,008.85

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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.