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Finding the Fourth Proportional to 398,641,808.80, 597,962,713.20 and 260,892,301.60

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Solution

The fourth proportional to 398,641,808.80, 597,962,713.20 and 260,892,301.60 is: 391,338,452.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,641,808.80 : 597,962,713.20 = 260,892,301.60 : x
  2. Step 2: Convert to fraction form
    398,641,808.80/597,962,713.20 = 260,892,301.60/x
  3. Step 3: Cross multiply
    398,641,808.80x = 597,962,713.20 × 260,892,301.60
  4. Step 4: Simplify right side
    398,641,808.80x = 156,003,868,517,728,704
  5. Step 5: Solve for x
    x = 156,003,868,517,728,704/398,641,808.80
  6. Step 6: Final answer
    x = 391,338,452.40

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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.