Home / 479,581.38-661,819.11-261,789.18

Finding the Fourth Proportional to 479,581.38, 661,819.11 and 261,789.18

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Solution

The fourth proportional to 479,581.38, 661,819.11 and 261,789.18 is: 361,267.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,581.38 : 661,819.11 = 261,789.18 : x
  2. Step 2: Convert to fraction form
    479,581.38/661,819.11 = 261,789.18/x
  3. Step 3: Cross multiply
    479,581.38x = 661,819.11 × 261,789.18
  4. Step 4: Simplify right side
    479,581.38x = 173,257,082,115.23
  5. Step 5: Solve for x
    x = 173,257,082,115.23/479,581.38
  6. Step 6: Final answer
    x = 361,267.32

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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.