Home / 871,407.20-1,307,111.88-272,371.43

Finding the Fourth Proportional to 871,407.20, 1,307,111.88 and 272,371.43

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Solution

The fourth proportional to 871,407.20, 1,307,111.88 and 272,371.43 is: 408,557.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,407.20 : 1,307,111.88 = 272,371.43 : x
  2. Step 2: Convert to fraction form
    871,407.20/1,307,111.88 = 272,371.43/x
  3. Step 3: Cross multiply
    871,407.20x = 1,307,111.88 × 272,371.43
  4. Step 4: Simplify right side
    871,407.20x = 356,019,931,925.59
  5. Step 5: Solve for x
    x = 356,019,931,925.59/871,407.20
  6. Step 6: Final answer
    x = 408,557.48

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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.