Home / 2,120,026.30-3,178,975.11-981,809.44

Finding the Fourth Proportional to 2,120,026.30, 3,178,975.11 and 981,809.44

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Solution

The fourth proportional to 2,120,026.30, 3,178,975.11 and 981,809.44 is: 1,472,221.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120,026.30 : 3,178,975.11 = 981,809.44 : x
  2. Step 2: Convert to fraction form
    2,120,026.30/3,178,975.11 = 981,809.44/x
  3. Step 3: Cross multiply
    2,120,026.30x = 3,178,975.11 × 981,809.44
  4. Step 4: Simplify right side
    2,120,026.30x = 3,121,147,772,523.04
  5. Step 5: Solve for x
    x = 3,121,147,772,523.04/2,120,026.30
  6. Step 6: Final answer
    x = 1,472,221.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.