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Finding the Fourth Proportional to 871,871.76, 1,307,101.80 and 272,524.32

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Solution

The fourth proportional to 871,871.76, 1,307,101.80 and 272,524.32 is: 408,565.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,871.76 : 1,307,101.80 = 272,524.32 : x
  2. Step 2: Convert to fraction form
    871,871.76/1,307,101.80 = 272,524.32/x
  3. Step 3: Cross multiply
    871,871.76x = 1,307,101.80 × 272,524.32
  4. Step 4: Simplify right side
    871,871.76x = 356,217,029,215.78
  5. Step 5: Solve for x
    x = 356,217,029,215.78/871,871.76
  6. Step 6: Final answer
    x = 408,565.85

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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.