Home / 1,170,072.80-1,755,109.20-990,711.47

Finding the Fourth Proportional to 1,170,072.80, 1,755,109.20 and 990,711.47

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Solution

The fourth proportional to 1,170,072.80, 1,755,109.20 and 990,711.47 is: 1,486,067.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,170,072.80 : 1,755,109.20 = 990,711.47 : x
  2. Step 2: Convert to fraction form
    1,170,072.80/1,755,109.20 = 990,711.47/x
  3. Step 3: Cross multiply
    1,170,072.80x = 1,755,109.20 × 990,711.47
  4. Step 4: Simplify right side
    1,170,072.80x = 1,738,806,815,542.52
  5. Step 5: Solve for x
    x = 1,738,806,815,542.52/1,170,072.80
  6. Step 6: Final answer
    x = 1,486,067.21

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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.