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Finding the Fourth Proportional to 1,331,244, 1,996,866 and 444,780

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Solution

The fourth proportional to 1,331,244, 1,996,866 and 444,780 is: 667,170

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331,244 : 1,996,866 = 444,780 : x
  2. Step 2: Convert to fraction form
    1,331,244/1,996,866 = 444,780/x
  3. Step 3: Cross multiply
    1,331,244x = 1,996,866 × 444,780
  4. Step 4: Simplify right side
    1,331,244x = 888,166,059,480
  5. Step 5: Solve for x
    x = 888,166,059,480/1,331,244
  6. Step 6: Final answer
    x = 667,170

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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.