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Finding the Fourth Proportional to 591,617.20, 887,425.80 and 217,591.60

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Solution

The fourth proportional to 591,617.20, 887,425.80 and 217,591.60 is: 326,387.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,617.20 : 887,425.80 = 217,591.60 : x
  2. Step 2: Convert to fraction form
    591,617.20/887,425.80 = 217,591.60/x
  3. Step 3: Cross multiply
    591,617.20x = 887,425.80 × 217,591.60
  4. Step 4: Simplify right side
    591,617.20x = 193,096,399,703.28
  5. Step 5: Solve for x
    x = 193,096,399,703.28/591,617.20
  6. Step 6: Final answer
    x = 326,387.40

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Similar ratio
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1.5x scale

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.