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Finding the Fourth Proportional to 486,591.70, 729,887.55 and 171,007.60

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Solution

The fourth proportional to 486,591.70, 729,887.55 and 171,007.60 is: 256,511.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,591.70 : 729,887.55 = 171,007.60 : x
  2. Step 2: Convert to fraction form
    486,591.70/729,887.55 = 171,007.60/x
  3. Step 3: Cross multiply
    486,591.70x = 729,887.55 × 171,007.60
  4. Step 4: Simplify right side
    486,591.70x = 124,816,318,195.38
  5. Step 5: Solve for x
    x = 124,816,318,195.38/486,591.70
  6. Step 6: Final answer
    x = 256,511.40

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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.