Home / 856,286.56-1,284,380.40-257,234.56

Finding the Fourth Proportional to 856,286.56, 1,284,380.40 and 257,234.56

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Solution

The fourth proportional to 856,286.56, 1,284,380.40 and 257,234.56 is: 385,836.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,286.56 : 1,284,380.40 = 257,234.56 : x
  2. Step 2: Convert to fraction form
    856,286.56/1,284,380.40 = 257,234.56/x
  3. Step 3: Cross multiply
    856,286.56x = 1,284,380.40 × 257,234.56
  4. Step 4: Simplify right side
    856,286.56x = 330,387,027,066.62
  5. Step 5: Solve for x
    x = 330,387,027,066.62/856,286.56
  6. Step 6: Final answer
    x = 385,836.99

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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.