Home / 450,286.88-621,335.04-256,719.56

Finding the Fourth Proportional to 450,286.88, 621,335.04 and 256,719.56

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Solution

The fourth proportional to 450,286.88, 621,335.04 and 256,719.56 is: 354,238.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,286.88 : 621,335.04 = 256,719.56 : x
  2. Step 2: Convert to fraction form
    450,286.88/621,335.04 = 256,719.56/x
  3. Step 3: Cross multiply
    450,286.88x = 621,335.04 × 256,719.56
  4. Step 4: Simplify right side
    450,286.88x = 159,508,858,081.38
  5. Step 5: Solve for x
    x = 159,508,858,081.38/450,286.88
  6. Step 6: Final answer
    x = 354,238.30

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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.