Home / 627,857.40-941,786.10-438,900.60

Finding the Fourth Proportional to 627,857.40, 941,786.10 and 438,900.60

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Solution

The fourth proportional to 627,857.40, 941,786.10 and 438,900.60 is: 658,350.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,857.40 : 941,786.10 = 438,900.60 : x
  2. Step 2: Convert to fraction form
    627,857.40/941,786.10 = 438,900.60/x
  3. Step 3: Cross multiply
    627,857.40x = 941,786.10 × 438,900.60
  4. Step 4: Simplify right side
    627,857.40x = 413,350,484,361.66
  5. Step 5: Solve for x
    x = 413,350,484,361.66/627,857.40
  6. Step 6: Final answer
    x = 658,350.90

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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.