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Finding the Fourth Proportional to 529,451.46, 730,649.97 and 287,737.88

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Solution

The fourth proportional to 529,451.46, 730,649.97 and 287,737.88 is: 397,082.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,451.46 : 730,649.97 = 287,737.88 : x
  2. Step 2: Convert to fraction form
    529,451.46/730,649.97 = 287,737.88/x
  3. Step 3: Cross multiply
    529,451.46x = 730,649.97 × 287,737.88
  4. Step 4: Simplify right side
    529,451.46x = 210,235,669,736.61
  5. Step 5: Solve for x
    x = 210,235,669,736.61/529,451.46
  6. Step 6: Final answer
    x = 397,082.05

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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.