Home / 638,227.41-957,455.01-211,788.78

Finding the Fourth Proportional to 638,227.41, 957,455.01 and 211,788.78

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Solution

The fourth proportional to 638,227.41, 957,455.01 and 211,788.78 is: 317,720.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,227.41 : 957,455.01 = 211,788.78 : x
  2. Step 2: Convert to fraction form
    638,227.41/957,455.01 = 211,788.78/x
  3. Step 3: Cross multiply
    638,227.41x = 957,455.01 × 211,788.78
  4. Step 4: Simplify right side
    638,227.41x = 202,778,228,472.79
  5. Step 5: Solve for x
    x = 202,778,228,472.79/638,227.41
  6. Step 6: Final answer
    x = 317,720.96

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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.