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Finding the Fourth Proportional to 498,844.60, 748,266.90 and 288,374.20

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Solution

The fourth proportional to 498,844.60, 748,266.90 and 288,374.20 is: 432,561.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,844.60 : 748,266.90 = 288,374.20 : x
  2. Step 2: Convert to fraction form
    498,844.60/748,266.90 = 288,374.20/x
  3. Step 3: Cross multiply
    498,844.60x = 748,266.90 × 288,374.20
  4. Step 4: Simplify right side
    498,844.60x = 215,780,868,673.98
  5. Step 5: Solve for x
    x = 215,780,868,673.98/498,844.60
  6. Step 6: Final answer
    x = 432,561.30

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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.