Home / 487,419,517.31-731,478,357.05-207,496,686.69

Finding the Fourth Proportional to 487,419,517.31, 731,478,357.05 and 207,496,686.69

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Solution

The fourth proportional to 487,419,517.31, 731,478,357.05 and 207,496,686.69 is: 311,393,635.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,419,517.31 : 731,478,357.05 = 207,496,686.69 : x
  2. Step 2: Convert to fraction form
    487,419,517.31/731,478,357.05 = 207,496,686.69/x
  3. Step 3: Cross multiply
    487,419,517.31x = 731,478,357.05 × 207,496,686.69
  4. Step 4: Simplify right side
    487,419,517.31x = 151,779,335,472,282,304
  5. Step 5: Solve for x
    x = 151,779,335,472,282,304/487,419,517.31
  6. Step 6: Final answer
    x = 311,393,635.43

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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.