Home / 815,042.70-1,222,564.05-809,793.90

Finding the Fourth Proportional to 815,042.70, 1,222,564.05 and 809,793.90

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Solution

The fourth proportional to 815,042.70, 1,222,564.05 and 809,793.90 is: 1,214,690.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,042.70 : 1,222,564.05 = 809,793.90 : x
  2. Step 2: Convert to fraction form
    815,042.70/1,222,564.05 = 809,793.90/x
  3. Step 3: Cross multiply
    815,042.70x = 1,222,564.05 × 809,793.90
  4. Step 4: Simplify right side
    815,042.70x = 990,024,910,049.30
  5. Step 5: Solve for x
    x = 990,024,910,049.30/815,042.70
  6. Step 6: Final answer
    x = 1,214,690.85

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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.