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Finding the Fourth Proportional to 529,194.87, 730,294.11 and 287,479.41

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Solution

The fourth proportional to 529,194.87, 730,294.11 and 287,479.41 is: 396,724.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,194.87 : 730,294.11 = 287,479.41 : x
  2. Step 2: Convert to fraction form
    529,194.87/730,294.11 = 287,479.41/x
  3. Step 3: Cross multiply
    529,194.87x = 730,294.11 × 287,479.41
  4. Step 4: Simplify right side
    529,194.87x = 209,944,519,869.28
  5. Step 5: Solve for x
    x = 209,944,519,869.28/529,194.87
  6. Step 6: Final answer
    x = 396,724.40

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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.