Home / 641,724.73-886,180.23-412,679.78

Finding the Fourth Proportional to 641,724.73, 886,180.23 and 412,679.78

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Solution

The fourth proportional to 641,724.73, 886,180.23 and 412,679.78 is: 569,884.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,724.73 : 886,180.23 = 412,679.78 : x
  2. Step 2: Convert to fraction form
    641,724.73/886,180.23 = 412,679.78/x
  3. Step 3: Cross multiply
    641,724.73x = 886,180.23 × 412,679.78
  4. Step 4: Simplify right side
    641,724.73x = 365,708,661,249.02
  5. Step 5: Solve for x
    x = 365,708,661,249.02/641,724.73
  6. Step 6: Final answer
    x = 569,884.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.