Home / 1,107,636.39-1,528,822.59-721,414.21

Finding the Fourth Proportional to 1,107,636.39, 1,528,822.59 and 721,414.21

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Solution

The fourth proportional to 1,107,636.39, 1,528,822.59 and 721,414.21 is: 995,736.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107,636.39 : 1,528,822.59 = 721,414.21 : x
  2. Step 2: Convert to fraction form
    1,107,636.39/1,528,822.59 = 721,414.21/x
  3. Step 3: Cross multiply
    1,107,636.39x = 1,528,822.59 × 721,414.21
  4. Step 4: Simplify right side
    1,107,636.39x = 1,102,914,344,258.68
  5. Step 5: Solve for x
    x = 1,102,914,344,258.68/1,107,636.39
  6. Step 6: Final answer
    x = 995,736.83

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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.