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Finding the Fourth Proportional to 638,071.95, 880,577.96 and 351,591.69

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Solution

The fourth proportional to 638,071.95, 880,577.96 and 351,591.69 is: 485,217.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,071.95 : 880,577.96 = 351,591.69 : x
  2. Step 2: Convert to fraction form
    638,071.95/880,577.96 = 351,591.69/x
  3. Step 3: Cross multiply
    638,071.95x = 880,577.96 × 351,591.69
  4. Step 4: Simplify right side
    638,071.95x = 309,603,891,375.19
  5. Step 5: Solve for x
    x = 309,603,891,375.19/638,071.95
  6. Step 6: Final answer
    x = 485,217.84

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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.