Home / 5,170,729.50-7,135,655.92-2,878,939.40

Finding the Fourth Proportional to 5,170,729.50, 7,135,655.92 and 2,878,939.40

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Solution

The fourth proportional to 5,170,729.50, 7,135,655.92 and 2,878,939.40 is: 3,972,963.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,170,729.50 : 7,135,655.92 = 2,878,939.40 : x
  2. Step 2: Convert to fraction form
    5,170,729.50/7,135,655.92 = 2,878,939.40/x
  3. Step 3: Cross multiply
    5,170,729.50x = 7,135,655.92 × 2,878,939.40
  4. Step 4: Simplify right side
    5,170,729.50x = 20,543,120,930,055.62
  5. Step 5: Solve for x
    x = 20,543,120,930,055.62/5,170,729.50
  6. Step 6: Final answer
    x = 3,972,963.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.