Home / 439,486.20-659,229.30-386,998.20

Finding the Fourth Proportional to 439,486.20, 659,229.30 and 386,998.20

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Solution

The fourth proportional to 439,486.20, 659,229.30 and 386,998.20 is: 580,497.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,486.20 : 659,229.30 = 386,998.20 : x
  2. Step 2: Convert to fraction form
    439,486.20/659,229.30 = 386,998.20/x
  3. Step 3: Cross multiply
    439,486.20x = 659,229.30 × 386,998.20
  4. Step 4: Simplify right side
    439,486.20x = 255,120,552,487.26
  5. Step 5: Solve for x
    x = 255,120,552,487.26/439,486.20
  6. Step 6: Final answer
    x = 580,497.30

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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.