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Finding the Fourth Proportional to 489,049.22, 674,655.51 and 325,781.61

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Solution

The fourth proportional to 489,049.22, 674,655.51 and 325,781.61 is: 449,423.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,049.22 : 674,655.51 = 325,781.61 : x
  2. Step 2: Convert to fraction form
    489,049.22/674,655.51 = 325,781.61/x
  3. Step 3: Cross multiply
    489,049.22x = 674,655.51 × 325,781.61
  4. Step 4: Simplify right side
    489,049.22x = 219,790,358,243.17
  5. Step 5: Solve for x
    x = 219,790,358,243.17/489,049.22
  6. Step 6: Final answer
    x = 449,423.80

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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.