Home / 1,131,190.86-1,561,029.39-621,888.78

Finding the Fourth Proportional to 1,131,190.86, 1,561,029.39 and 621,888.78

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Solution

The fourth proportional to 1,131,190.86, 1,561,029.39 and 621,888.78 is: 858,198.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,190.86 : 1,561,029.39 = 621,888.78 : x
  2. Step 2: Convert to fraction form
    1,131,190.86/1,561,029.39 = 621,888.78/x
  3. Step 3: Cross multiply
    1,131,190.86x = 1,561,029.39 × 621,888.78
  4. Step 4: Simplify right side
    1,131,190.86x = 970,786,662,891.24
  5. Step 5: Solve for x
    x = 970,786,662,891.24/1,131,190.86
  6. Step 6: Final answer
    x = 858,198.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.