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Finding the Fourth Proportional to 725,380.14, 1,000,732.14 and 438,402

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Solution

The fourth proportional to 725,380.14, 1,000,732.14 and 438,402 is: 604,818.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,380.14 : 1,000,732.14 = 438,402 : x
  2. Step 2: Convert to fraction form
    725,380.14/1,000,732.14 = 438,402/x
  3. Step 3: Cross multiply
    725,380.14x = 1,000,732.14 × 438,402
  4. Step 4: Simplify right side
    725,380.14x = 438,722,971,640.28
  5. Step 5: Solve for x
    x = 438,722,971,640.28/725,380.14
  6. Step 6: Final answer
    x = 604,818.01

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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.