Home / 871,269.90-1,306,305.45-443,978.70

Finding the Fourth Proportional to 871,269.90, 1,306,305.45 and 443,978.70

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Solution

The fourth proportional to 871,269.90, 1,306,305.45 and 443,978.70 is: 665,662.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,269.90 : 1,306,305.45 = 443,978.70 : x
  2. Step 2: Convert to fraction form
    871,269.90/1,306,305.45 = 443,978.70/x
  3. Step 3: Cross multiply
    871,269.90x = 1,306,305.45 × 443,978.70
  4. Step 4: Simplify right side
    871,269.90x = 579,971,795,493.92
  5. Step 5: Solve for x
    x = 579,971,795,493.92/871,269.90
  6. Step 6: Final answer
    x = 665,662.61

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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.