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Finding the Fourth Proportional to 658,195.20, 987,292.80 and 459,129.60

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Solution

The fourth proportional to 658,195.20, 987,292.80 and 459,129.60 is: 688,694.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,195.20 : 987,292.80 = 459,129.60 : x
  2. Step 2: Convert to fraction form
    658,195.20/987,292.80 = 459,129.60/x
  3. Step 3: Cross multiply
    658,195.20x = 987,292.80 × 459,129.60
  4. Step 4: Simplify right side
    658,195.20x = 453,295,348,346.88
  5. Step 5: Solve for x
    x = 453,295,348,346.88/658,195.20
  6. Step 6: Final answer
    x = 688,694.40

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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.