Home / 1,189,987.98-1,642,018.20-699,979.74

Finding the Fourth Proportional to 1,189,987.98, 1,642,018.20 and 699,979.74

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Solution

The fourth proportional to 1,189,987.98, 1,642,018.20 and 699,979.74 is: 965,874.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,987.98 : 1,642,018.20 = 699,979.74 : x
  2. Step 2: Convert to fraction form
    1,189,987.98/1,642,018.20 = 699,979.74/x
  3. Step 3: Cross multiply
    1,189,987.98x = 1,642,018.20 × 699,979.74
  4. Step 4: Simplify right side
    1,189,987.98x = 1,149,379,472,711.27
  5. Step 5: Solve for x
    x = 1,149,379,472,711.27/1,189,987.98
  6. Step 6: Final answer
    x = 965,874.86

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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.