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Finding the Fourth Proportional to 627,725.85, 866,258.05 and 355,845.03

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Solution

The fourth proportional to 627,725.85, 866,258.05 and 355,845.03 is: 491,064.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,725.85 : 866,258.05 = 355,845.03 : x
  2. Step 2: Convert to fraction form
    627,725.85/866,258.05 = 355,845.03/x
  3. Step 3: Cross multiply
    627,725.85x = 866,258.05 × 355,845.03
  4. Step 4: Simplify right side
    627,725.85x = 308,253,621,789.99
  5. Step 5: Solve for x
    x = 308,253,621,789.99/627,725.85
  6. Step 6: Final answer
    x = 491,064.09

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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.