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Finding the Fourth Proportional to 3,111,584, 4,667,376 and 747,680

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Solution

The fourth proportional to 3,111,584, 4,667,376 and 747,680 is: 1,121,520

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111,584 : 4,667,376 = 747,680 : x
  2. Step 2: Convert to fraction form
    3,111,584/4,667,376 = 747,680/x
  3. Step 3: Cross multiply
    3,111,584x = 4,667,376 × 747,680
  4. Step 4: Simplify right side
    3,111,584x = 3,489,703,687,680
  5. Step 5: Solve for x
    x = 3,489,703,687,680/3,111,584
  6. Step 6: Final answer
    x = 1,121,520

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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.