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Finding the Fourth Proportional to 529,073.38, 730,123.34 and 287,359.98

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Solution

The fourth proportional to 529,073.38, 730,123.34 and 287,359.98 is: 396,557.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,073.38 : 730,123.34 = 287,359.98 : x
  2. Step 2: Convert to fraction form
    529,073.38/730,123.34 = 287,359.98/x
  3. Step 3: Cross multiply
    529,073.38x = 730,123.34 × 287,359.98
  4. Step 4: Simplify right side
    529,073.38x = 209,808,229,098.33
  5. Step 5: Solve for x
    x = 209,808,229,098.33/529,073.38
  6. Step 6: Final answer
    x = 396,557.90

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1.5x scale

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.