Home / 2,158,382.18-2,978,489.25-1,191,491.66

Finding the Fourth Proportional to 2,158,382.18, 2,978,489.25 and 1,191,491.66

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Solution

The fourth proportional to 2,158,382.18, 2,978,489.25 and 1,191,491.66 is: 1,644,215.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,158,382.18 : 2,978,489.25 = 1,191,491.66 : x
  2. Step 2: Convert to fraction form
    2,158,382.18/2,978,489.25 = 1,191,491.66/x
  3. Step 3: Cross multiply
    2,158,382.18x = 2,978,489.25 × 1,191,491.66
  4. Step 4: Simplify right side
    2,158,382.18x = 3,548,845,085,882.21
  5. Step 5: Solve for x
    x = 3,548,845,085,882.21/2,158,382.18
  6. Step 6: Final answer
    x = 1,644,215.34

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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.