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Finding the Fourth Proportional to 721,949.97, 996,302.76 and 395,257.53

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Solution

The fourth proportional to 721,949.97, 996,302.76 and 395,257.53 is: 545,461.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,949.97 : 996,302.76 = 395,257.53 : x
  2. Step 2: Convert to fraction form
    721,949.97/996,302.76 = 395,257.53/x
  3. Step 3: Cross multiply
    721,949.97x = 996,302.76 × 395,257.53
  4. Step 4: Simplify right side
    721,949.97x = 393,796,168,049.78
  5. Step 5: Solve for x
    x = 393,796,168,049.78/721,949.97
  6. Step 6: Final answer
    x = 545,461.85

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.