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Finding the Fourth Proportional to 627,203.88, 865,548.72 and 340,728.48

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Solution

The fourth proportional to 627,203.88, 865,548.72 and 340,728.48 is: 470,209.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,203.88 : 865,548.72 = 340,728.48 : x
  2. Step 2: Convert to fraction form
    627,203.88/865,548.72 = 340,728.48/x
  3. Step 3: Cross multiply
    627,203.88x = 865,548.72 × 340,728.48
  4. Step 4: Simplify right side
    627,203.88x = 294,917,099,731.55
  5. Step 5: Solve for x
    x = 294,917,099,731.55/627,203.88
  6. Step 6: Final answer
    x = 470,209.30

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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.