Home / 1,327,129.40-1,990,694.10-329,857.40

Finding the Fourth Proportional to 1,327,129.40, 1,990,694.10 and 329,857.40

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Solution

The fourth proportional to 1,327,129.40, 1,990,694.10 and 329,857.40 is: 494,786.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,327,129.40 : 1,990,694.10 = 329,857.40 : x
  2. Step 2: Convert to fraction form
    1,327,129.40/1,990,694.10 = 329,857.40/x
  3. Step 3: Cross multiply
    1,327,129.40x = 1,990,694.10 × 329,857.40
  4. Step 4: Simplify right side
    1,327,129.40x = 656,645,180,021.34
  5. Step 5: Solve for x
    x = 656,645,180,021.34/1,327,129.40
  6. Step 6: Final answer
    x = 494,786.10

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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.