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Finding the Fourth Proportional to 559,147.86, 771,725.17 and 329,691.47

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Solution

The fourth proportional to 559,147.86, 771,725.17 and 329,691.47 is: 455,033.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,147.86 : 771,725.17 = 329,691.47 : x
  2. Step 2: Convert to fraction form
    559,147.86/771,725.17 = 329,691.47/x
  3. Step 3: Cross multiply
    559,147.86x = 771,725.17 × 329,691.47
  4. Step 4: Simplify right side
    559,147.86x = 254,431,202,286.79
  5. Step 5: Solve for x
    x = 254,431,202,286.79/559,147.86
  6. Step 6: Final answer
    x = 455,033.85

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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.