Home / 657,665.20-984,748.20-419,719.60

Finding the Fourth Proportional to 657,665.20, 984,748.20 and 419,719.60

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Solution

The fourth proportional to 657,665.20, 984,748.20 and 419,719.60 is: 628,462.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,665.20 : 984,748.20 = 419,719.60 : x
  2. Step 2: Convert to fraction form
    657,665.20/984,748.20 = 419,719.60/x
  3. Step 3: Cross multiply
    657,665.20x = 984,748.20 × 419,719.60
  4. Step 4: Simplify right side
    657,665.20x = 413,318,120,604.72
  5. Step 5: Solve for x
    x = 413,318,120,604.72/657,665.20
  6. Step 6: Final answer
    x = 628,462.81

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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.