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Finding the Fourth Proportional to 627,376.46, 865,777.68 and 340,896.47

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Solution

The fourth proportional to 627,376.46, 865,777.68 and 340,896.47 is: 470,436.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,376.46 : 865,777.68 = 340,896.47 : x
  2. Step 2: Convert to fraction form
    627,376.46/865,777.68 = 340,896.47/x
  3. Step 3: Cross multiply
    627,376.46x = 865,777.68 × 340,896.47
  4. Step 4: Simplify right side
    627,376.46x = 295,140,550,587.90
  5. Step 5: Solve for x
    x = 295,140,550,587.90/627,376.46
  6. Step 6: Final answer
    x = 470,436.13

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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.