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Finding the Fourth Proportional to 498,843.60, 748,265.40 and 288,373.20

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Solution

The fourth proportional to 498,843.60, 748,265.40 and 288,373.20 is: 432,559.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,843.60 : 748,265.40 = 288,373.20 : x
  2. Step 2: Convert to fraction form
    498,843.60/748,265.40 = 288,373.20/x
  3. Step 3: Cross multiply
    498,843.60x = 748,265.40 × 288,373.20
  4. Step 4: Simplify right side
    498,843.60x = 215,779,687,847.28
  5. Step 5: Solve for x
    x = 215,779,687,847.28/498,843.60
  6. Step 6: Final answer
    x = 432,559.80

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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.