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Finding the Fourth Proportional to 8,986,807.80, 13,480,211.70 and 6,861,043.80

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Solution

The fourth proportional to 8,986,807.80, 13,480,211.70 and 6,861,043.80 is: 10,291,565.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,986,807.80 : 13,480,211.70 = 6,861,043.80 : x
  2. Step 2: Convert to fraction form
    8,986,807.80/13,480,211.70 = 6,861,043.80/x
  3. Step 3: Cross multiply
    8,986,807.80x = 13,480,211.70 × 6,861,043.80
  4. Step 4: Simplify right side
    8,986,807.80x = 92,488,322,906,972.45
  5. Step 5: Solve for x
    x = 92,488,322,906,972.45/8,986,807.80
  6. Step 6: Final answer
    x = 10,291,565.70

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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.