Home / 627,516.19-865,939.11-355,587.33

Finding the Fourth Proportional to 627,516.19, 865,939.11 and 355,587.33

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Solution

The fourth proportional to 627,516.19, 865,939.11 and 355,587.33 is: 490,691.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,516.19 : 865,939.11 = 355,587.33 : x
  2. Step 2: Convert to fraction form
    627,516.19/865,939.11 = 355,587.33/x
  3. Step 3: Cross multiply
    627,516.19x = 865,939.11 × 355,587.33
  4. Step 4: Simplify right side
    627,516.19x = 307,916,976,067.48
  5. Step 5: Solve for x
    x = 307,916,976,067.48/627,516.19
  6. Step 6: Final answer
    x = 490,691.68

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Half scale
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Double scale
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1.5x scale

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.