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Finding the Fourth Proportional to 719,024.76, 992,274.94 and 396,755.61

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Solution

The fourth proportional to 719,024.76, 992,274.94 and 396,755.61 is: 547,534.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,024.76 : 992,274.94 = 396,755.61 : x
  2. Step 2: Convert to fraction form
    719,024.76/992,274.94 = 396,755.61/x
  3. Step 3: Cross multiply
    719,024.76x = 992,274.94 × 396,755.61
  4. Step 4: Simplify right side
    719,024.76x = 393,690,648,115.52
  5. Step 5: Solve for x
    x = 393,690,648,115.52/719,024.76
  6. Step 6: Final answer
    x = 547,534.20

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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.