Home / 398,591,785.20-597,887,677.80-343,109,344.80

Finding the Fourth Proportional to 398,591,785.20, 597,887,677.80 and 343,109,344.80

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Solution

The fourth proportional to 398,591,785.20, 597,887,677.80 and 343,109,344.80 is: 514,664,017.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,591,785.20 : 597,887,677.80 = 343,109,344.80 : x
  2. Step 2: Convert to fraction form
    398,591,785.20/597,887,677.80 = 343,109,344.80/x
  3. Step 3: Cross multiply
    398,591,785.20x = 597,887,677.80 × 343,109,344.80
  4. Step 4: Simplify right side
    398,591,785.20x = 205,140,849,393,951,488
  5. Step 5: Solve for x
    x = 205,140,849,393,951,488/398,591,785.20
  6. Step 6: Final answer
    x = 514,664,017.20

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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.