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Finding the Fourth Proportional to 598,641.20, 897,961.80 and 431,335.70

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Solution

The fourth proportional to 598,641.20, 897,961.80 and 431,335.70 is: 647,003.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    598,641.20 : 897,961.80 = 431,335.70 : x
  2. Step 2: Convert to fraction form
    598,641.20/897,961.80 = 431,335.70/x
  3. Step 3: Cross multiply
    598,641.20x = 897,961.80 × 431,335.70
  4. Step 4: Simplify right side
    598,641.20x = 387,322,981,576.26
  5. Step 5: Solve for x
    x = 387,322,981,576.26/598,641.20
  6. Step 6: Final answer
    x = 647,003.55

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Double scale
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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.