Home / 815,517.56-1,223,215.86-342,183.80

Finding the Fourth Proportional to 815,517.56, 1,223,215.86 and 342,183.80

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Solution

The fourth proportional to 815,517.56, 1,223,215.86 and 342,183.80 is: 513,250.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,517.56 : 1,223,215.86 = 342,183.80 : x
  2. Step 2: Convert to fraction form
    815,517.56/1,223,215.86 = 342,183.80/x
  3. Step 3: Cross multiply
    815,517.56x = 1,223,215.86 × 342,183.80
  4. Step 4: Simplify right side
    815,517.56x = 418,564,651,195.07
  5. Step 5: Solve for x
    x = 418,564,651,195.07/815,517.56
  6. Step 6: Final answer
    x = 513,250.32

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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.