Home / 1,988,785.62-2,744,443.80-1,215,711.18

Finding the Fourth Proportional to 1,988,785.62, 2,744,443.80 and 1,215,711.18

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Solution

The fourth proportional to 1,988,785.62, 2,744,443.80 and 1,215,711.18 is: 1,677,632.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988,785.62 : 2,744,443.80 = 1,215,711.18 : x
  2. Step 2: Convert to fraction form
    1,988,785.62/2,744,443.80 = 1,215,711.18/x
  3. Step 3: Cross multiply
    1,988,785.62x = 2,744,443.80 × 1,215,711.18
  4. Step 4: Simplify right side
    1,988,785.62x = 3,336,451,010,541.68
  5. Step 5: Solve for x
    x = 3,336,451,010,541.68/1,988,785.62
  6. Step 6: Final answer
    x = 1,677,632.31

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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.