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Finding the Fourth Proportional to 627,672.80, 940,126.80 and 544,728.80

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Solution

The fourth proportional to 627,672.80, 940,126.80 and 544,728.80 is: 815,893.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,672.80 : 940,126.80 = 544,728.80 : x
  2. Step 2: Convert to fraction form
    627,672.80/940,126.80 = 544,728.80/x
  3. Step 3: Cross multiply
    627,672.80x = 940,126.80 × 544,728.80
  4. Step 4: Simplify right side
    627,672.80x = 512,114,143,611.84
  5. Step 5: Solve for x
    x = 512,114,143,611.84/627,672.80
  6. Step 6: Final answer
    x = 815,893.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.