Home / 3,979,985.72-5,969,974.95-1,247,552.78

Finding the Fourth Proportional to 3,979,985.72, 5,969,974.95 and 1,247,552.78

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Solution

The fourth proportional to 3,979,985.72, 5,969,974.95 and 1,247,552.78 is: 1,871,328.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979,985.72 : 5,969,974.95 = 1,247,552.78 : x
  2. Step 2: Convert to fraction form
    3,979,985.72/5,969,974.95 = 1,247,552.78/x
  3. Step 3: Cross multiply
    3,979,985.72x = 5,969,974.95 × 1,247,552.78
  4. Step 4: Simplify right side
    3,979,985.72x = 7,447,858,815,552.99
  5. Step 5: Solve for x
    x = 7,447,858,815,552.99/3,979,985.72
  6. Step 6: Final answer
    x = 1,871,328.03

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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.