Home / 1,131,190.36-1,561,028.70-621,888.28

Finding the Fourth Proportional to 1,131,190.36, 1,561,028.70 and 621,888.28

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Solution

The fourth proportional to 1,131,190.36, 1,561,028.70 and 621,888.28 is: 858,198.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,190.36 : 1,561,028.70 = 621,888.28 : x
  2. Step 2: Convert to fraction form
    1,131,190.36/1,561,028.70 = 621,888.28/x
  3. Step 3: Cross multiply
    1,131,190.36x = 1,561,028.70 × 621,888.28
  4. Step 4: Simplify right side
    1,131,190.36x = 970,785,453,273.64
  5. Step 5: Solve for x
    x = 970,785,453,273.64/1,131,190.36
  6. Step 6: Final answer
    x = 858,198.13

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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.