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Finding the Fourth Proportional to 627,471.21, 865,906.95 and 340,992.42

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Solution

The fourth proportional to 627,471.21, 865,906.95 and 340,992.42 is: 470,567.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,471.21 : 865,906.95 = 340,992.42 : x
  2. Step 2: Convert to fraction form
    627,471.21/865,906.95 = 340,992.42/x
  3. Step 3: Cross multiply
    627,471.21x = 865,906.95 × 340,992.42
  4. Step 4: Simplify right side
    627,471.21x = 295,267,706,375.32
  5. Step 5: Solve for x
    x = 295,267,706,375.32/627,471.21
  6. Step 6: Final answer
    x = 470,567.74

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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.