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Finding the Fourth Proportional to 662,641.43, 914,420.81 and 404,949.61

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Solution

The fourth proportional to 662,641.43, 914,420.81 and 404,949.61 is: 558,815.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,641.43 : 914,420.81 = 404,949.61 : x
  2. Step 2: Convert to fraction form
    662,641.43/914,420.81 = 404,949.61/x
  3. Step 3: Cross multiply
    662,641.43x = 914,420.81 × 404,949.61
  4. Step 4: Simplify right side
    662,641.43x = 370,294,352,540.78
  5. Step 5: Solve for x
    x = 370,294,352,540.78/662,641.43
  6. Step 6: Final answer
    x = 558,815.58

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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.