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Finding the Fourth Proportional to 627,801.55, 866,327.34 and 352,144.24

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Solution

The fourth proportional to 627,801.55, 866,327.34 and 352,144.24 is: 485,937.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,801.55 : 866,327.34 = 352,144.24 : x
  2. Step 2: Convert to fraction form
    627,801.55/866,327.34 = 352,144.24/x
  3. Step 3: Cross multiply
    627,801.55x = 866,327.34 × 352,144.24
  4. Step 4: Simplify right side
    627,801.55x = 305,072,182,735.52
  5. Step 5: Solve for x
    x = 305,072,182,735.52/627,801.55
  6. Step 6: Final answer
    x = 485,937.29

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Double scale
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Similar ratio
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1.5x scale

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.