Home / 3,209,678.39-4,429,809.30-1,986,377.90

Finding the Fourth Proportional to 3,209,678.39, 4,429,809.30 and 1,986,377.90

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Solution

The fourth proportional to 3,209,678.39, 4,429,809.30 and 1,986,377.90 is: 2,741,481.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,209,678.39 : 4,429,809.30 = 1,986,377.90 : x
  2. Step 2: Convert to fraction form
    3,209,678.39/4,429,809.30 = 1,986,377.90/x
  3. Step 3: Cross multiply
    3,209,678.39x = 4,429,809.30 × 1,986,377.90
  4. Step 4: Simplify right side
    3,209,678.39x = 8,799,275,272,585.42
  5. Step 5: Solve for x
    x = 8,799,275,272,585.42/3,209,678.39
  6. Step 6: Final answer
    x = 2,741,481.92

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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.