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Finding the Fourth Proportional to 3,111,582, 4,667,373 and 747,678

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Solution

The fourth proportional to 3,111,582, 4,667,373 and 747,678 is: 1,121,517

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111,582 : 4,667,373 = 747,678 : x
  2. Step 2: Convert to fraction form
    3,111,582/4,667,373 = 747,678/x
  3. Step 3: Cross multiply
    3,111,582x = 4,667,373 × 747,678
  4. Step 4: Simplify right side
    3,111,582x = 3,489,692,109,894
  5. Step 5: Solve for x
    x = 3,489,692,109,894/3,111,582
  6. Step 6: Final answer
    x = 1,121,517

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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.