Home / 814,490.80-1,221,736.20-341,126.80

Finding the Fourth Proportional to 814,490.80, 1,221,736.20 and 341,126.80

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Solution

The fourth proportional to 814,490.80, 1,221,736.20 and 341,126.80 is: 511,690.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,490.80 : 1,221,736.20 = 341,126.80 : x
  2. Step 2: Convert to fraction form
    814,490.80/1,221,736.20 = 341,126.80/x
  3. Step 3: Cross multiply
    814,490.80x = 1,221,736.20 × 341,126.80
  4. Step 4: Simplify right side
    814,490.80x = 416,766,960,350.16
  5. Step 5: Solve for x
    x = 416,766,960,350.16/814,490.80
  6. Step 6: Final answer
    x = 511,690.20

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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.