Home / 871,403.20-1,307,105.88-272,367.43

Finding the Fourth Proportional to 871,403.20, 1,307,105.88 and 272,367.43

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Solution

The fourth proportional to 871,403.20, 1,307,105.88 and 272,367.43 is: 408,551.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,403.20 : 1,307,105.88 = 272,367.43 : x
  2. Step 2: Convert to fraction form
    871,403.20/1,307,105.88 = 272,367.43/x
  3. Step 3: Cross multiply
    871,403.20x = 1,307,105.88 × 272,367.43
  4. Step 4: Simplify right side
    871,403.20x = 356,013,069,273.49
  5. Step 5: Solve for x
    x = 356,013,069,273.49/871,403.20
  6. Step 6: Final answer
    x = 408,551.48

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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.