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Finding the Fourth Proportional to 468,587.43, 646,662.50 and 287,399.25

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Solution

The fourth proportional to 468,587.43, 646,662.50 and 287,399.25 is: 396,618.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,587.43 : 646,662.50 = 287,399.25 : x
  2. Step 2: Convert to fraction form
    468,587.43/646,662.50 = 287,399.25/x
  3. Step 3: Cross multiply
    468,587.43x = 646,662.50 × 287,399.25
  4. Step 4: Simplify right side
    468,587.43x = 185,850,316,066.13
  5. Step 5: Solve for x
    x = 185,850,316,066.13/468,587.43
  6. Step 6: Final answer
    x = 396,618.23

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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.