Home / 815,034.30-1,222,551.45-647,072.70

Finding the Fourth Proportional to 815,034.30, 1,222,551.45 and 647,072.70

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Solution

The fourth proportional to 815,034.30, 1,222,551.45 and 647,072.70 is: 970,609.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,034.30 : 1,222,551.45 = 647,072.70 : x
  2. Step 2: Convert to fraction form
    815,034.30/1,222,551.45 = 647,072.70/x
  3. Step 3: Cross multiply
    815,034.30x = 1,222,551.45 × 647,072.70
  4. Step 4: Simplify right side
    815,034.30x = 791,079,667,640.42
  5. Step 5: Solve for x
    x = 791,079,667,640.42/815,034.30
  6. Step 6: Final answer
    x = 970,609.05

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Double scale
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Similar ratio
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1.5x scale

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.