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Finding the Fourth Proportional to 422,797.88, 633,531.65 and 326,969.69

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Solution

The fourth proportional to 422,797.88, 633,531.65 and 326,969.69 is: 489,940.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,797.88 : 633,531.65 = 326,969.69 : x
  2. Step 2: Convert to fraction form
    422,797.88/633,531.65 = 326,969.69/x
  3. Step 3: Cross multiply
    422,797.88x = 633,531.65 × 326,969.69
  4. Step 4: Simplify right side
    422,797.88x = 207,145,642,403.18
  5. Step 5: Solve for x
    x = 207,145,642,403.18/422,797.88
  6. Step 6: Final answer
    x = 489,940.11

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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.