Home / 386,502.66-579,919.23-199,645.38

Finding the Fourth Proportional to 386,502.66, 579,919.23 and 199,645.38

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Solution

The fourth proportional to 386,502.66, 579,919.23 and 199,645.38 is: 299,553.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,502.66 : 579,919.23 = 199,645.38 : x
  2. Step 2: Convert to fraction form
    386,502.66/579,919.23 = 199,645.38/x
  3. Step 3: Cross multiply
    386,502.66x = 579,919.23 × 199,645.38
  4. Step 4: Simplify right side
    386,502.66x = 115,778,195,042.66
  5. Step 5: Solve for x
    x = 115,778,195,042.66/386,502.66
  6. Step 6: Final answer
    x = 299,553.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.