Home / 1,326,979.80-1,990,469.70-329,707.80

Finding the Fourth Proportional to 1,326,979.80, 1,990,469.70 and 329,707.80

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Solution

The fourth proportional to 1,326,979.80, 1,990,469.70 and 329,707.80 is: 494,561.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326,979.80 : 1,990,469.70 = 329,707.80 : x
  2. Step 2: Convert to fraction form
    1,326,979.80/1,990,469.70 = 329,707.80/x
  3. Step 3: Cross multiply
    1,326,979.80x = 1,990,469.70 × 329,707.80
  4. Step 4: Simplify right side
    1,326,979.80x = 656,273,385,753.66
  5. Step 5: Solve for x
    x = 656,273,385,753.66/1,326,979.80
  6. Step 6: Final answer
    x = 494,561.70

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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.