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Finding the Fourth Proportional to 8,314,935.40, 12,472,403.10 and 5,478,250.60

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Solution

The fourth proportional to 8,314,935.40, 12,472,403.10 and 5,478,250.60 is: 8,217,375.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,314,935.40 : 12,472,403.10 = 5,478,250.60 : x
  2. Step 2: Convert to fraction form
    8,314,935.40/12,472,403.10 = 5,478,250.60/x
  3. Step 3: Cross multiply
    8,314,935.40x = 12,472,403.10 × 5,478,250.60
  4. Step 4: Simplify right side
    8,314,935.40x = 68,326,949,766,016.85
  5. Step 5: Solve for x
    x = 68,326,949,766,016.85/8,314,935.40
  6. Step 6: Final answer
    x = 8,217,375.90

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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.