Home / 815,281.38-1,125,120.66-471,105.90

Finding the Fourth Proportional to 815,281.38, 1,125,120.66 and 471,105.90

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Solution

The fourth proportional to 815,281.38, 1,125,120.66 and 471,105.90 is: 650,144.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,281.38 : 1,125,120.66 = 471,105.90 : x
  2. Step 2: Convert to fraction form
    815,281.38/1,125,120.66 = 471,105.90/x
  3. Step 3: Cross multiply
    815,281.38x = 1,125,120.66 × 471,105.90
  4. Step 4: Simplify right side
    815,281.38x = 530,050,981,137.89
  5. Step 5: Solve for x
    x = 530,050,981,137.89/815,281.38
  6. Step 6: Final answer
    x = 650,144.84

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Double scale
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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.