Home / 766,321.38-1,057,523.49-426,789.63

Finding the Fourth Proportional to 766,321.38, 1,057,523.49 and 426,789.63

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Solution

The fourth proportional to 766,321.38, 1,057,523.49 and 426,789.63 is: 588,969.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,321.38 : 1,057,523.49 = 426,789.63 : x
  2. Step 2: Convert to fraction form
    766,321.38/1,057,523.49 = 426,789.63/x
  3. Step 3: Cross multiply
    766,321.38x = 1,057,523.49 × 426,789.63
  4. Step 4: Simplify right side
    766,321.38x = 451,340,059,013.41
  5. Step 5: Solve for x
    x = 451,340,059,013.41/766,321.38
  6. Step 6: Final answer
    x = 588,969.68

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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.