Home / 3,979,986.72-5,969,976.45-1,247,553.78

Finding the Fourth Proportional to 3,979,986.72, 5,969,976.45 and 1,247,553.78

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Solution

The fourth proportional to 3,979,986.72, 5,969,976.45 and 1,247,553.78 is: 1,871,329.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979,986.72 : 5,969,976.45 = 1,247,553.78 : x
  2. Step 2: Convert to fraction form
    3,979,986.72/5,969,976.45 = 1,247,553.78/x
  3. Step 3: Cross multiply
    3,979,986.72x = 5,969,976.45 × 1,247,553.78
  4. Step 4: Simplify right side
    3,979,986.72x = 7,447,866,686,708.48
  5. Step 5: Solve for x
    x = 7,447,866,686,708.48/3,979,986.72
  6. Step 6: Final answer
    x = 1,871,329.53

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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.