Home / 672,949.28-928,144.86-431,254.32

Finding the Fourth Proportional to 672,949.28, 928,144.86 and 431,254.32

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Solution

The fourth proportional to 672,949.28, 928,144.86 and 431,254.32 is: 594,794.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,949.28 : 928,144.86 = 431,254.32 : x
  2. Step 2: Convert to fraction form
    672,949.28/928,144.86 = 431,254.32/x
  3. Step 3: Cross multiply
    672,949.28x = 928,144.86 × 431,254.32
  4. Step 4: Simplify right side
    672,949.28x = 400,266,480,460.80
  5. Step 5: Solve for x
    x = 400,266,480,460.80/672,949.28
  6. Step 6: Final answer
    x = 594,794.43

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Double scale
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Similar ratio
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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.