Home / 1,131,149.50-1,561,018.62-689,649.56

Finding the Fourth Proportional to 1,131,149.50, 1,561,018.62 and 689,649.56

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Solution

The fourth proportional to 1,131,149.50, 1,561,018.62 and 689,649.56 is: 951,736.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,149.50 : 1,561,018.62 = 689,649.56 : x
  2. Step 2: Convert to fraction form
    1,131,149.50/1,561,018.62 = 689,649.56/x
  3. Step 3: Cross multiply
    1,131,149.50x = 1,561,018.62 × 689,649.56
  4. Step 4: Simplify right side
    1,131,149.50x = 1,076,555,801,190.44
  5. Step 5: Solve for x
    x = 1,076,555,801,190.44/1,131,149.50
  6. Step 6: Final answer
    x = 951,736.09

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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.