Home / 1,131,306.93-1,561,170.69-641,321.88

Finding the Fourth Proportional to 1,131,306.93, 1,561,170.69 and 641,321.88

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Solution

The fourth proportional to 1,131,306.93, 1,561,170.69 and 641,321.88 is: 885,005.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,306.93 : 1,561,170.69 = 641,321.88 : x
  2. Step 2: Convert to fraction form
    1,131,306.93/1,561,170.69 = 641,321.88/x
  3. Step 3: Cross multiply
    1,131,306.93x = 1,561,170.69 × 641,321.88
  4. Step 4: Simplify right side
    1,131,306.93x = 1,001,212,921,911.70
  5. Step 5: Solve for x
    x = 1,001,212,921,911.70/1,131,306.93
  6. Step 6: Final answer
    x = 885,005.56

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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.