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Finding the Fourth Proportional to 3,111,586, 4,667,379 and 747,682

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Solution

The fourth proportional to 3,111,586, 4,667,379 and 747,682 is: 1,121,523

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111,586 : 4,667,379 = 747,682 : x
  2. Step 2: Convert to fraction form
    3,111,586/4,667,379 = 747,682/x
  3. Step 3: Cross multiply
    3,111,586x = 4,667,379 × 747,682
  4. Step 4: Simplify right side
    3,111,586x = 3,489,715,265,478
  5. Step 5: Solve for x
    x = 3,489,715,265,478/3,111,586
  6. Step 6: Final answer
    x = 1,121,523

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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.