Home / 815,545.60-1,223,512.80-394,475.20

Finding the Fourth Proportional to 815,545.60, 1,223,512.80 and 394,475.20

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Solution

The fourth proportional to 815,545.60, 1,223,512.80 and 394,475.20 is: 591,806.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,545.60 : 1,223,512.80 = 394,475.20 : x
  2. Step 2: Convert to fraction form
    815,545.60/1,223,512.80 = 394,475.20/x
  3. Step 3: Cross multiply
    815,545.60x = 1,223,512.80 × 394,475.20
  4. Step 4: Simplify right side
    815,545.60x = 482,645,456,482.56
  5. Step 5: Solve for x
    x = 482,645,456,482.56/815,545.60
  6. Step 6: Final answer
    x = 591,806.83

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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.