Home / 8,638,321.50-11,920,884.63-5,016,882.78

Finding the Fourth Proportional to 8,638,321.50, 11,920,884.63 and 5,016,882.78

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Solution

The fourth proportional to 8,638,321.50, 11,920,884.63 and 5,016,882.78 is: 6,923,298.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,638,321.50 : 11,920,884.63 = 5,016,882.78 : x
  2. Step 2: Convert to fraction form
    8,638,321.50/11,920,884.63 = 5,016,882.78/x
  3. Step 3: Cross multiply
    8,638,321.50x = 11,920,884.63 × 5,016,882.78
  4. Step 4: Simplify right side
    8,638,321.50x = 59,805,680,822,613.68
  5. Step 5: Solve for x
    x = 59,805,680,822,613.68/8,638,321.50
  6. Step 6: Final answer
    x = 6,923,298.79

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1.5x scale

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.