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Finding the Fourth Proportional to 529,070.84, 730,123.12 and 287,358.13

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Solution

The fourth proportional to 529,070.84, 730,123.12 and 287,358.13 is: 396,557.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,070.84 : 730,123.12 = 287,358.13 : x
  2. Step 2: Convert to fraction form
    529,070.84/730,123.12 = 287,358.13/x
  3. Step 3: Cross multiply
    529,070.84x = 730,123.12 × 287,358.13
  4. Step 4: Simplify right side
    529,070.84x = 209,806,814,088.43
  5. Step 5: Solve for x
    x = 209,806,814,088.43/529,070.84
  6. Step 6: Final answer
    x = 396,557.13

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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.