Home / 815,517.60-1,223,470.80-394,447.20

Finding the Fourth Proportional to 815,517.60, 1,223,470.80 and 394,447.20

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Solution

The fourth proportional to 815,517.60, 1,223,470.80 and 394,447.20 is: 591,764.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,517.60 : 1,223,470.80 = 394,447.20 : x
  2. Step 2: Convert to fraction form
    815,517.60/1,223,470.80 = 394,447.20/x
  3. Step 3: Cross multiply
    815,517.60x = 1,223,470.80 × 394,447.20
  4. Step 4: Simplify right side
    815,517.60x = 482,594,631,341.76
  5. Step 5: Solve for x
    x = 482,594,631,341.76/815,517.60
  6. Step 6: Final answer
    x = 591,764.83

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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.