Home / 627,863.40-941,795.10-438,906.60

Finding the Fourth Proportional to 627,863.40, 941,795.10 and 438,906.60

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Solution

The fourth proportional to 627,863.40, 941,795.10 and 438,906.60 is: 658,359.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,863.40 : 941,795.10 = 438,906.60 : x
  2. Step 2: Convert to fraction form
    627,863.40/941,795.10 = 438,906.60/x
  3. Step 3: Cross multiply
    627,863.40x = 941,795.10 × 438,906.60
  4. Step 4: Simplify right side
    627,863.40x = 413,360,085,237.66
  5. Step 5: Solve for x
    x = 413,360,085,237.66/627,863.40
  6. Step 6: Final answer
    x = 658,359.90

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.