Home / 926,858.20-1,390,287.30-394,396.60

Finding the Fourth Proportional to 926,858.20, 1,390,287.30 and 394,396.60

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Solution

The fourth proportional to 926,858.20, 1,390,287.30 and 394,396.60 is: 591,594.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,858.20 : 1,390,287.30 = 394,396.60 : x
  2. Step 2: Convert to fraction form
    926,858.20/1,390,287.30 = 394,396.60/x
  3. Step 3: Cross multiply
    926,858.20x = 1,390,287.30 × 394,396.60
  4. Step 4: Simplify right side
    926,858.20x = 548,324,584,143.18
  5. Step 5: Solve for x
    x = 548,324,584,143.18/926,858.20
  6. Step 6: Final answer
    x = 591,594.90

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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.