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Finding the Fourth Proportional to 529,263.40, 730,387 and 287,545.92

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Solution

The fourth proportional to 529,263.40, 730,387 and 287,545.92 is: 396,815.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,263.40 : 730,387 = 287,545.92 : x
  2. Step 2: Convert to fraction form
    529,263.40/730,387 = 287,545.92/x
  3. Step 3: Cross multiply
    529,263.40x = 730,387 × 287,545.92
  4. Step 4: Simplify right side
    529,263.40x = 210,019,801,871.04
  5. Step 5: Solve for x
    x = 210,019,801,871.04/529,263.40
  6. Step 6: Final answer
    x = 396,815.28

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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.