Home / 871,289.40-1,306,334.70-443,998.20

Finding the Fourth Proportional to 871,289.40, 1,306,334.70 and 443,998.20

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Solution

The fourth proportional to 871,289.40, 1,306,334.70 and 443,998.20 is: 665,691.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,289.40 : 1,306,334.70 = 443,998.20 : x
  2. Step 2: Convert to fraction form
    871,289.40/1,306,334.70 = 443,998.20/x
  3. Step 3: Cross multiply
    871,289.40x = 1,306,334.70 × 443,998.20
  4. Step 4: Simplify right side
    871,289.40x = 580,010,255,397.54
  5. Step 5: Solve for x
    x = 580,010,255,397.54/871,289.40
  6. Step 6: Final answer
    x = 665,691.85

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Double scale
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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.