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Finding the Fourth Proportional to 1,327,239, 1,990,865.79 and 329,967

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Solution

The fourth proportional to 1,327,239, 1,990,865.79 and 329,967 is: 494,952.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,327,239 : 1,990,865.79 = 329,967 : x
  2. Step 2: Convert to fraction form
    1,327,239/1,990,865.79 = 329,967/x
  3. Step 3: Cross multiply
    1,327,239x = 1,990,865.79 × 329,967
  4. Step 4: Simplify right side
    1,327,239x = 656,920,012,128.93
  5. Step 5: Solve for x
    x = 656,920,012,128.93/1,327,239
  6. Step 6: Final answer
    x = 494,952.31

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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.