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Finding the Fourth Proportional to 638,344.47, 880,954.74 and 351,863.85

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Solution

The fourth proportional to 638,344.47, 880,954.74 and 351,863.85 is: 485,593.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,344.47 : 880,954.74 = 351,863.85 : x
  2. Step 2: Convert to fraction form
    638,344.47/880,954.74 = 351,863.85/x
  3. Step 3: Cross multiply
    638,344.47x = 880,954.74 × 351,863.85
  4. Step 4: Simplify right side
    638,344.47x = 309,976,126,492.15
  5. Step 5: Solve for x
    x = 309,976,126,492.15/638,344.47
  6. Step 6: Final answer
    x = 485,593.82

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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.