Home / 581,204.20-871,806.30-439,486.60

Finding the Fourth Proportional to 581,204.20, 871,806.30 and 439,486.60

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Solution

The fourth proportional to 581,204.20, 871,806.30 and 439,486.60 is: 659,229.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,204.20 : 871,806.30 = 439,486.60 : x
  2. Step 2: Convert to fraction form
    581,204.20/871,806.30 = 439,486.60/x
  3. Step 3: Cross multiply
    581,204.20x = 871,806.30 × 439,486.60
  4. Step 4: Simplify right side
    581,204.20x = 383,147,186,645.58
  5. Step 5: Solve for x
    x = 383,147,186,645.58/581,204.20
  6. Step 6: Final answer
    x = 659,229.90

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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.