Home / 7,178,939.30-9,906,936.28-3,915,753.86

Finding the Fourth Proportional to 7,178,939.30, 9,906,936.28 and 3,915,753.86

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Solution

The fourth proportional to 7,178,939.30, 9,906,936.28 and 3,915,753.86 is: 5,403,740.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,178,939.30 : 9,906,936.28 = 3,915,753.86 : x
  2. Step 2: Convert to fraction form
    7,178,939.30/9,906,936.28 = 3,915,753.86/x
  3. Step 3: Cross multiply
    7,178,939.30x = 9,906,936.28 × 3,915,753.86
  4. Step 4: Simplify right side
    7,178,939.30x = 38,793,123,979,184.04
  5. Step 5: Solve for x
    x = 38,793,123,979,184.04/7,178,939.30
  6. Step 6: Final answer
    x = 5,403,740.35

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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.