Home / 1,988,218.54-2,743,819.25-1,128,858.76

Finding the Fourth Proportional to 1,988,218.54, 2,743,819.25 and 1,128,858.76

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Solution

The fourth proportional to 1,988,218.54, 2,743,819.25 and 1,128,858.76 is: 1,557,869.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988,218.54 : 2,743,819.25 = 1,128,858.76 : x
  2. Step 2: Convert to fraction form
    1,988,218.54/2,743,819.25 = 1,128,858.76/x
  3. Step 3: Cross multiply
    1,988,218.54x = 2,743,819.25 × 1,128,858.76
  4. Step 4: Simplify right side
    1,988,218.54x = 3,097,384,396,219.13
  5. Step 5: Solve for x
    x = 3,097,384,396,219.13/1,988,218.54
  6. Step 6: Final answer
    x = 1,557,869.18

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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.