Home / 747,189.50-1,031,121.51-478,917.50

Finding the Fourth Proportional to 747,189.50, 1,031,121.51 and 478,917.50

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Solution

The fourth proportional to 747,189.50, 1,031,121.51 and 478,917.50 is: 660,906.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,189.50 : 1,031,121.51 = 478,917.50 : x
  2. Step 2: Convert to fraction form
    747,189.50/1,031,121.51 = 478,917.50/x
  3. Step 3: Cross multiply
    747,189.50x = 1,031,121.51 × 478,917.50
  4. Step 4: Simplify right side
    747,189.50x = 493,822,135,765.43
  5. Step 5: Solve for x
    x = 493,822,135,765.43/747,189.50
  6. Step 6: Final answer
    x = 660,906.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.