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Finding the Fourth Proportional to 638,371.14, 880,958.10 and 351,901.50

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Solution

The fourth proportional to 638,371.14, 880,958.10 and 351,901.50 is: 485,627.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,371.14 : 880,958.10 = 351,901.50 : x
  2. Step 2: Convert to fraction form
    638,371.14/880,958.10 = 351,901.50/x
  3. Step 3: Cross multiply
    638,371.14x = 880,958.10 × 351,901.50
  4. Step 4: Simplify right side
    638,371.14x = 310,010,476,827.15
  5. Step 5: Solve for x
    x = 310,010,476,827.15/638,371.14
  6. Step 6: Final answer
    x = 485,627.34

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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.