Home / 819,004.60-1,228,506.90-419,512.60

Finding the Fourth Proportional to 819,004.60, 1,228,506.90 and 419,512.60

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Solution

The fourth proportional to 819,004.60, 1,228,506.90 and 419,512.60 is: 629,268.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,004.60 : 1,228,506.90 = 419,512.60 : x
  2. Step 2: Convert to fraction form
    819,004.60/1,228,506.90 = 419,512.60/x
  3. Step 3: Cross multiply
    819,004.60x = 1,228,506.90 × 419,512.60
  4. Step 4: Simplify right side
    819,004.60x = 515,374,123,736.94
  5. Step 5: Solve for x
    x = 515,374,123,736.94/819,004.60
  6. Step 6: Final answer
    x = 629,268.90

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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.