Home / 905,998.12-1,250,278.20-498,106.90

Finding the Fourth Proportional to 905,998.12, 1,250,278.20 and 498,106.90

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Solution

The fourth proportional to 905,998.12, 1,250,278.20 and 498,106.90 is: 687,387.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,998.12 : 1,250,278.20 = 498,106.90 : x
  2. Step 2: Convert to fraction form
    905,998.12/1,250,278.20 = 498,106.90/x
  3. Step 3: Cross multiply
    905,998.12x = 1,250,278.20 × 498,106.90
  4. Step 4: Simplify right side
    905,998.12x = 622,772,198,339.58
  5. Step 5: Solve for x
    x = 622,772,198,339.58/905,998.12
  6. Step 6: Final answer
    x = 687,387.96

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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.