Home / 1,231,750.18-1,699,693.80-687,874.30

Finding the Fourth Proportional to 1,231,750.18, 1,699,693.80 and 687,874.30

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Solution

The fourth proportional to 1,231,750.18, 1,699,693.80 and 687,874.30 is: 949,198.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,750.18 : 1,699,693.80 = 687,874.30 : x
  2. Step 2: Convert to fraction form
    1,231,750.18/1,699,693.80 = 687,874.30/x
  3. Step 3: Cross multiply
    1,231,750.18x = 1,699,693.80 × 687,874.30
  4. Step 4: Simplify right side
    1,231,750.18x = 1,169,175,682,775.61
  5. Step 5: Solve for x
    x = 1,169,175,682,775.61/1,231,750.18
  6. Step 6: Final answer
    x = 949,198.71

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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.