Home / 766,478.76-1,149,896.10-261,044.11

Finding the Fourth Proportional to 766,478.76, 1,149,896.10 and 261,044.11

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Solution

The fourth proportional to 766,478.76, 1,149,896.10 and 261,044.11 is: 391,626.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,478.76 : 1,149,896.10 = 261,044.11 : x
  2. Step 2: Convert to fraction form
    766,478.76/1,149,896.10 = 261,044.11/x
  3. Step 3: Cross multiply
    766,478.76x = 1,149,896.10 × 261,044.11
  4. Step 4: Simplify right side
    766,478.76x = 300,173,605,943.80
  5. Step 5: Solve for x
    x = 300,173,605,943.80/766,478.76
  6. Step 6: Final answer
    x = 391,626.78

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Double scale
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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.