Home / 743,151.38-1,025,514.58-420,863.78

Finding the Fourth Proportional to 743,151.38, 1,025,514.58 and 420,863.78

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Solution

The fourth proportional to 743,151.38, 1,025,514.58 and 420,863.78 is: 580,772.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,151.38 : 1,025,514.58 = 420,863.78 : x
  2. Step 2: Convert to fraction form
    743,151.38/1,025,514.58 = 420,863.78/x
  3. Step 3: Cross multiply
    743,151.38x = 1,025,514.58 × 420,863.78
  4. Step 4: Simplify right side
    743,151.38x = 431,601,942,583.91
  5. Step 5: Solve for x
    x = 431,601,942,583.91/743,151.38
  6. Step 6: Final answer
    x = 580,772.58

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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.