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Finding the Fourth Proportional to 8,294,620, 12,441,930 and 1,990,876

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Solution

The fourth proportional to 8,294,620, 12,441,930 and 1,990,876 is: 2,986,314

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,294,620 : 12,441,930 = 1,990,876 : x
  2. Step 2: Convert to fraction form
    8,294,620/12,441,930 = 1,990,876/x
  3. Step 3: Cross multiply
    8,294,620x = 12,441,930 × 1,990,876
  4. Step 4: Simplify right side
    8,294,620x = 24,770,339,830,680
  5. Step 5: Solve for x
    x = 24,770,339,830,680/8,294,620
  6. Step 6: Final answer
    x = 2,986,314

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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.