Home / 687,822.08-1,031,732.11-451,109.30

Finding the Fourth Proportional to 687,822.08, 1,031,732.11 and 451,109.30

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Solution

The fourth proportional to 687,822.08, 1,031,732.11 and 451,109.30 is: 676,663.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,822.08 : 1,031,732.11 = 451,109.30 : x
  2. Step 2: Convert to fraction form
    687,822.08/1,031,732.11 = 451,109.30/x
  3. Step 3: Cross multiply
    687,822.08x = 1,031,732.11 × 451,109.30
  4. Step 4: Simplify right side
    687,822.08x = 465,423,951,381.18
  5. Step 5: Solve for x
    x = 465,423,951,381.18/687,822.08
  6. Step 6: Final answer
    x = 676,663.29

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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.