Home / 1,100,857.32-1,519,234.26-687,638.79

Finding the Fourth Proportional to 1,100,857.32, 1,519,234.26 and 687,638.79

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Solution

The fourth proportional to 1,100,857.32, 1,519,234.26 and 687,638.79 is: 948,973.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,100,857.32 : 1,519,234.26 = 687,638.79 : x
  2. Step 2: Convert to fraction form
    1,100,857.32/1,519,234.26 = 687,638.79/x
  3. Step 3: Cross multiply
    1,100,857.32x = 1,519,234.26 × 687,638.79
  4. Step 4: Simplify right side
    1,100,857.32x = 1,044,684,408,272.95
  5. Step 5: Solve for x
    x = 1,044,684,408,272.95/1,100,857.32
  6. Step 6: Final answer
    x = 948,973.49

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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.