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Finding the Fourth Proportional to 8,857,379.60, 13,286,069.40 and 6,715,869.20

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Solution

The fourth proportional to 8,857,379.60, 13,286,069.40 and 6,715,869.20 is: 10,073,803.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,857,379.60 : 13,286,069.40 = 6,715,869.20 : x
  2. Step 2: Convert to fraction form
    8,857,379.60/13,286,069.40 = 6,715,869.20/x
  3. Step 3: Cross multiply
    8,857,379.60x = 13,286,069.40 × 6,715,869.20
  4. Step 4: Simplify right side
    8,857,379.60x = 89,227,504,272,522.48
  5. Step 5: Solve for x
    x = 89,227,504,272,522.48/8,857,379.60
  6. Step 6: Final answer
    x = 10,073,803.80

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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.