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Finding the Fourth Proportional to 618,234.70, 927,352.05 and 478,093.90

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Solution

The fourth proportional to 618,234.70, 927,352.05 and 478,093.90 is: 717,140.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,234.70 : 927,352.05 = 478,093.90 : x
  2. Step 2: Convert to fraction form
    618,234.70/927,352.05 = 478,093.90/x
  3. Step 3: Cross multiply
    618,234.70x = 927,352.05 × 478,093.90
  4. Step 4: Simplify right side
    618,234.70x = 443,361,358,257.50
  5. Step 5: Solve for x
    x = 443,361,358,257.50/618,234.70
  6. Step 6: Final answer
    x = 717,140.85

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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.