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Finding the Fourth Proportional to 529,363.52, 730,520.28 and 287,646.12

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Solution

The fourth proportional to 529,363.52, 730,520.28 and 287,646.12 is: 396,950.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,363.52 : 730,520.28 = 287,646.12 : x
  2. Step 2: Convert to fraction form
    529,363.52/730,520.28 = 287,646.12/x
  3. Step 3: Cross multiply
    529,363.52x = 730,520.28 × 287,646.12
  4. Step 4: Simplify right side
    529,363.52x = 210,131,324,123.31
  5. Step 5: Solve for x
    x = 210,131,324,123.31/529,363.52
  6. Step 6: Final answer
    x = 396,950.90

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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.