Home / 1,988,082.90-2,982,124.35-1,278,911.70

Finding the Fourth Proportional to 1,988,082.90, 2,982,124.35 and 1,278,911.70

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Solution

The fourth proportional to 1,988,082.90, 2,982,124.35 and 1,278,911.70 is: 1,918,367.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988,082.90 : 2,982,124.35 = 1,278,911.70 : x
  2. Step 2: Convert to fraction form
    1,988,082.90/2,982,124.35 = 1,278,911.70/x
  3. Step 3: Cross multiply
    1,988,082.90x = 2,982,124.35 × 1,278,911.70
  4. Step 4: Simplify right side
    1,988,082.90x = 3,813,873,722,069.90
  5. Step 5: Solve for x
    x = 3,813,873,722,069.90/1,988,082.90
  6. Step 6: Final answer
    x = 1,918,367.55

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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.