Home / 687,520.12-1,031,308.16-327,505.92

Finding the Fourth Proportional to 687,520.12, 1,031,308.16 and 327,505.92

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Solution

The fourth proportional to 687,520.12, 1,031,308.16 and 327,505.92 is: 491,272.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,520.12 : 1,031,308.16 = 327,505.92 : x
  2. Step 2: Convert to fraction form
    687,520.12/1,031,308.16 = 327,505.92/x
  3. Step 3: Cross multiply
    687,520.12x = 1,031,308.16 × 327,505.92
  4. Step 4: Simplify right side
    687,520.12x = 337,759,527,744.31
  5. Step 5: Solve for x
    x = 337,759,527,744.31/687,520.12
  6. Step 6: Final answer
    x = 491,272.21

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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.