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Finding the Fourth Proportional to 1,327,251, 1,990,883.79 and 329,979

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Solution

The fourth proportional to 1,327,251, 1,990,883.79 and 329,979 is: 494,970.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,327,251 : 1,990,883.79 = 329,979 : x
  2. Step 2: Convert to fraction form
    1,327,251/1,990,883.79 = 329,979/x
  3. Step 3: Cross multiply
    1,327,251x = 1,990,883.79 × 329,979
  4. Step 4: Simplify right side
    1,327,251x = 656,949,842,140.41
  5. Step 5: Solve for x
    x = 656,949,842,140.41/1,327,251
  6. Step 6: Final answer
    x = 494,970.31

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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.