Home / 865,414.20-1,298,121.30-492,166.20

Finding the Fourth Proportional to 865,414.20, 1,298,121.30 and 492,166.20

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Solution

The fourth proportional to 865,414.20, 1,298,121.30 and 492,166.20 is: 738,249.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,414.20 : 1,298,121.30 = 492,166.20 : x
  2. Step 2: Convert to fraction form
    865,414.20/1,298,121.30 = 492,166.20/x
  3. Step 3: Cross multiply
    865,414.20x = 1,298,121.30 × 492,166.20
  4. Step 4: Simplify right side
    865,414.20x = 638,891,427,360.06
  5. Step 5: Solve for x
    x = 638,891,427,360.06/865,414.20
  6. Step 6: Final answer
    x = 738,249.30

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.