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Finding the Fourth Proportional to 627,321.65, 865,702.49 and 340,842.87

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Solution

The fourth proportional to 627,321.65, 865,702.49 and 340,842.87 is: 470,362.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,321.65 : 865,702.49 = 340,842.87 : x
  2. Step 2: Convert to fraction form
    627,321.65/865,702.49 = 340,842.87/x
  3. Step 3: Cross multiply
    627,321.65x = 865,702.49 × 340,842.87
  4. Step 4: Simplify right side
    627,321.65x = 295,068,519,553.53
  5. Step 5: Solve for x
    x = 295,068,519,553.53/627,321.65
  6. Step 6: Final answer
    x = 470,362.41

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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.