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Finding the Fourth Proportional to 506,620.52, 699,156.90 and 280,262.12

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Solution

The fourth proportional to 506,620.52, 699,156.90 and 280,262.12 is: 386,773.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,620.52 : 699,156.90 = 280,262.12 : x
  2. Step 2: Convert to fraction form
    506,620.52/699,156.90 = 280,262.12/x
  3. Step 3: Cross multiply
    506,620.52x = 699,156.90 × 280,262.12
  4. Step 4: Simplify right side
    506,620.52x = 195,947,195,006.63
  5. Step 5: Solve for x
    x = 195,947,195,006.63/506,620.52
  6. Step 6: Final answer
    x = 386,773.11

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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.