Home / 906,000.12-1,250,280.96-498,108.90

Finding the Fourth Proportional to 906,000.12, 1,250,280.96 and 498,108.90

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Solution

The fourth proportional to 906,000.12, 1,250,280.96 and 498,108.90 is: 687,390.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,000.12 : 1,250,280.96 = 498,108.90 : x
  2. Step 2: Convert to fraction form
    906,000.12/1,250,280.96 = 498,108.90/x
  3. Step 3: Cross multiply
    906,000.12x = 1,250,280.96 × 498,108.90
  4. Step 4: Simplify right side
    906,000.12x = 622,776,073,676.54
  5. Step 5: Solve for x
    x = 622,776,073,676.54/906,000.12
  6. Step 6: Final answer
    x = 687,390.72

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Half scale
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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.