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Finding the Fourth Proportional to 627,295.28, 865,476.78 and 355,319.96

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Solution

The fourth proportional to 627,295.28, 865,476.78 and 355,319.96 is: 490,233.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,295.28 : 865,476.78 = 355,319.96 : x
  2. Step 2: Convert to fraction form
    627,295.28/865,476.78 = 355,319.96/x
  3. Step 3: Cross multiply
    627,295.28x = 865,476.78 × 355,319.96
  4. Step 4: Simplify right side
    627,295.28x = 307,521,174,850.53
  5. Step 5: Solve for x
    x = 307,521,174,850.53/627,295.28
  6. Step 6: Final answer
    x = 490,233.52

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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.