Home / 657,629.20-984,694.20-419,683.60

Finding the Fourth Proportional to 657,629.20, 984,694.20 and 419,683.60

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Solution

The fourth proportional to 657,629.20, 984,694.20 and 419,683.60 is: 628,408.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,629.20 : 984,694.20 = 419,683.60 : x
  2. Step 2: Convert to fraction form
    657,629.20/984,694.20 = 419,683.60/x
  3. Step 3: Cross multiply
    657,629.20x = 984,694.20 × 419,683.60
  4. Step 4: Simplify right side
    657,629.20x = 413,260,006,755.12
  5. Step 5: Solve for x
    x = 413,260,006,755.12/657,629.20
  6. Step 6: Final answer
    x = 628,408.85

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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.