Home / 431,360,761.40-647,041,142.10-329,324,089.40

Finding the Fourth Proportional to 431,360,761.40, 647,041,142.10 and 329,324,089.40

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Solution

The fourth proportional to 431,360,761.40, 647,041,142.10 and 329,324,089.40 is: 493,986,134.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,360,761.40 : 647,041,142.10 = 329,324,089.40 : x
  2. Step 2: Convert to fraction form
    431,360,761.40/647,041,142.10 = 329,324,089.40/x
  3. Step 3: Cross multiply
    431,360,761.40x = 647,041,142.10 × 329,324,089.40
  4. Step 4: Simplify right side
    431,360,761.40x = 213,086,234,926,418,496
  5. Step 5: Solve for x
    x = 213,086,234,926,418,496/431,360,761.40
  6. Step 6: Final answer
    x = 493,986,134.10

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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.