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Finding the Fourth Proportional to 627,342.48, 865,735.83 and 340,863.30

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Solution

The fourth proportional to 627,342.48, 865,735.83 and 340,863.30 is: 470,393.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,342.48 : 865,735.83 = 340,863.30 : x
  2. Step 2: Convert to fraction form
    627,342.48/865,735.83 = 340,863.30/x
  3. Step 3: Cross multiply
    627,342.48x = 865,735.83 × 340,863.30
  4. Step 4: Simplify right side
    627,342.48x = 295,097,571,942.04
  5. Step 5: Solve for x
    x = 295,097,571,942.04/627,342.48
  6. Step 6: Final answer
    x = 470,393.10

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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.