Home / 815,275.38-1,125,112.38-471,099.90

Finding the Fourth Proportional to 815,275.38, 1,125,112.38 and 471,099.90

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Solution

The fourth proportional to 815,275.38, 1,125,112.38 and 471,099.90 is: 650,136.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,275.38 : 1,125,112.38 = 471,099.90 : x
  2. Step 2: Convert to fraction form
    815,275.38/1,125,112.38 = 471,099.90/x
  3. Step 3: Cross multiply
    815,275.38x = 1,125,112.38 × 471,099.90
  4. Step 4: Simplify right side
    815,275.38x = 530,040,329,706.76
  5. Step 5: Solve for x
    x = 530,040,329,706.76/815,275.38
  6. Step 6: Final answer
    x = 650,136.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.