Home / 1,988,604.82-2,744,197.40-1,215,530.05

Finding the Fourth Proportional to 1,988,604.82, 2,744,197.40 and 1,215,530.05

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Solution

The fourth proportional to 1,988,604.82, 2,744,197.40 and 1,215,530.05 is: 1,677,384.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988,604.82 : 2,744,197.40 = 1,215,530.05 : x
  2. Step 2: Convert to fraction form
    1,988,604.82/2,744,197.40 = 1,215,530.05/x
  3. Step 3: Cross multiply
    1,988,604.82x = 2,744,197.40 × 1,215,530.05
  4. Step 4: Simplify right side
    1,988,604.82x = 3,335,654,396,022.97
  5. Step 5: Solve for x
    x = 3,335,654,396,022.97/1,988,604.82
  6. Step 6: Final answer
    x = 1,677,384.25

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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.