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Finding the Fourth Proportional to 432,897.85, 649,346.78 and 327,921.85

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Solution

The fourth proportional to 432,897.85, 649,346.78 and 327,921.85 is: 491,882.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,897.85 : 649,346.78 = 327,921.85 : x
  2. Step 2: Convert to fraction form
    432,897.85/649,346.78 = 327,921.85/x
  3. Step 3: Cross multiply
    432,897.85x = 649,346.78 × 327,921.85
  4. Step 4: Simplify right side
    432,897.85x = 212,934,995,749.53
  5. Step 5: Solve for x
    x = 212,934,995,749.53/432,897.85
  6. Step 6: Final answer
    x = 491,882.78

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Similar ratio
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1.5x scale

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.