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Finding the Fourth Proportional to 6,479,687.22, 9,719,399.61 and 1,687,270.38

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Solution

The fourth proportional to 6,479,687.22, 9,719,399.61 and 1,687,270.38 is: 2,530,871.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,479,687.22 : 9,719,399.61 = 1,687,270.38 : x
  2. Step 2: Convert to fraction form
    6,479,687.22/9,719,399.61 = 1,687,270.38/x
  3. Step 3: Cross multiply
    6,479,687.22x = 9,719,399.61 × 1,687,270.38
  4. Step 4: Simplify right side
    6,479,687.22x = 16,399,255,073,336.55
  5. Step 5: Solve for x
    x = 16,399,255,073,336.55/6,479,687.22
  6. Step 6: Final answer
    x = 2,530,871.40

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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.