Home / 827,272.80-1,240,909.20-512,344.80

Finding the Fourth Proportional to 827,272.80, 1,240,909.20 and 512,344.80

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Solution

The fourth proportional to 827,272.80, 1,240,909.20 and 512,344.80 is: 768,517.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,272.80 : 1,240,909.20 = 512,344.80 : x
  2. Step 2: Convert to fraction form
    827,272.80/1,240,909.20 = 512,344.80/x
  3. Step 3: Cross multiply
    827,272.80x = 1,240,909.20 × 512,344.80
  4. Step 4: Simplify right side
    827,272.80x = 635,773,375,892.16
  5. Step 5: Solve for x
    x = 635,773,375,892.16/827,272.80
  6. Step 6: Final answer
    x = 768,517.20

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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.