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Finding the Fourth Proportional to 618,200.70, 927,301.05 and 478,059.90

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Solution

The fourth proportional to 618,200.70, 927,301.05 and 478,059.90 is: 717,089.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,200.70 : 927,301.05 = 478,059.90 : x
  2. Step 2: Convert to fraction form
    618,200.70/927,301.05 = 478,059.90/x
  3. Step 3: Cross multiply
    618,200.70x = 927,301.05 × 478,059.90
  4. Step 4: Simplify right side
    618,200.70x = 443,305,447,232.90
  5. Step 5: Solve for x
    x = 443,305,447,232.90/618,200.70
  6. Step 6: Final answer
    x = 717,089.85

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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.