Home / 7,912,781.28-11,871,167.76-3,655,959.12

Finding the Fourth Proportional to 7,912,781.28, 11,871,167.76 and 3,655,959.12

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Solution

The fourth proportional to 7,912,781.28, 11,871,167.76 and 3,655,959.12 is: 5,484,860.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,912,781.28 : 11,871,167.76 = 3,655,959.12 : x
  2. Step 2: Convert to fraction form
    7,912,781.28/11,871,167.76 = 3,655,959.12/x
  3. Step 3: Cross multiply
    7,912,781.28x = 11,871,167.76 × 3,655,959.12
  4. Step 4: Simplify right side
    7,912,781.28x = 43,400,504,037,221.97
  5. Step 5: Solve for x
    x = 43,400,504,037,221.97/7,912,781.28
  6. Step 6: Final answer
    x = 5,484,860.82

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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.