Home / 1,107,636.42-1,528,822.64-721,414.24

Finding the Fourth Proportional to 1,107,636.42, 1,528,822.64 and 721,414.24

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Solution

The fourth proportional to 1,107,636.42, 1,528,822.64 and 721,414.24 is: 995,736.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107,636.42 : 1,528,822.64 = 721,414.24 : x
  2. Step 2: Convert to fraction form
    1,107,636.42/1,528,822.64 = 721,414.24/x
  3. Step 3: Cross multiply
    1,107,636.42x = 1,528,822.64 × 721,414.24
  4. Step 4: Simplify right side
    1,107,636.42x = 1,102,914,423,145.38
  5. Step 5: Solve for x
    x = 1,102,914,423,145.38/1,107,636.42
  6. Step 6: Final answer
    x = 995,736.87

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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.