Home / 905,908.76-1,250,169.98-498,027.72

Finding the Fourth Proportional to 905,908.76, 1,250,169.98 and 498,027.72

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Solution

The fourth proportional to 905,908.76, 1,250,169.98 and 498,027.72 is: 687,286.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,908.76 : 1,250,169.98 = 498,027.72 : x
  2. Step 2: Convert to fraction form
    905,908.76/1,250,169.98 = 498,027.72/x
  3. Step 3: Cross multiply
    905,908.76x = 1,250,169.98 × 498,027.72
  4. Step 4: Simplify right side
    905,908.76x = 622,619,304,751.85
  5. Step 5: Solve for x
    x = 622,619,304,751.85/905,908.76
  6. Step 6: Final answer
    x = 687,286.99

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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.