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Finding the Fourth Proportional to 8,889,793.45, 13,334,690.18 and 8,541,428.65

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Solution

The fourth proportional to 8,889,793.45, 13,334,690.18 and 8,541,428.65 is: 12,812,142.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,889,793.45 : 13,334,690.18 = 8,541,428.65 : x
  2. Step 2: Convert to fraction form
    8,889,793.45/13,334,690.18 = 8,541,428.65/x
  3. Step 3: Cross multiply
    8,889,793.45x = 13,334,690.18 × 8,541,428.65
  4. Step 4: Simplify right side
    8,889,793.45x = 113,897,304,742,325.66
  5. Step 5: Solve for x
    x = 113,897,304,742,325.66/8,889,793.45
  6. Step 6: Final answer
    x = 12,812,142.98

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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.