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Finding the Fourth Proportional to 1,327,012, 1,990,518 and 440,548

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Solution

The fourth proportional to 1,327,012, 1,990,518 and 440,548 is: 660,822

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,327,012 : 1,990,518 = 440,548 : x
  2. Step 2: Convert to fraction form
    1,327,012/1,990,518 = 440,548/x
  3. Step 3: Cross multiply
    1,327,012x = 1,990,518 × 440,548
  4. Step 4: Simplify right side
    1,327,012x = 876,918,723,864
  5. Step 5: Solve for x
    x = 876,918,723,864/1,327,012
  6. Step 6: Final answer
    x = 660,822

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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.