Home / 815,020.20-1,222,530.30-726,373.80

Finding the Fourth Proportional to 815,020.20, 1,222,530.30 and 726,373.80

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Solution

The fourth proportional to 815,020.20, 1,222,530.30 and 726,373.80 is: 1,089,560.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,020.20 : 1,222,530.30 = 726,373.80 : x
  2. Step 2: Convert to fraction form
    815,020.20/1,222,530.30 = 726,373.80/x
  3. Step 3: Cross multiply
    815,020.20x = 1,222,530.30 × 726,373.80
  4. Step 4: Simplify right side
    815,020.20x = 888,013,979,626.14
  5. Step 5: Solve for x
    x = 888,013,979,626.14/815,020.20
  6. Step 6: Final answer
    x = 1,089,560.70

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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.