Home / 1,107,636.73-1,528,823.07-721,414.56

Finding the Fourth Proportional to 1,107,636.73, 1,528,823.07 and 721,414.56

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Solution

The fourth proportional to 1,107,636.73, 1,528,823.07 and 721,414.56 is: 995,737.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107,636.73 : 1,528,823.07 = 721,414.56 : x
  2. Step 2: Convert to fraction form
    1,107,636.73/1,528,823.07 = 721,414.56/x
  3. Step 3: Cross multiply
    1,107,636.73x = 1,528,823.07 × 721,414.56
  4. Step 4: Simplify right side
    1,107,636.73x = 1,102,915,212,914.25
  5. Step 5: Solve for x
    x = 1,102,915,212,914.25/1,107,636.73
  6. Step 6: Final answer
    x = 995,737.31

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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.