Home / 455,217.86-628,151.90-261,586.38

Finding the Fourth Proportional to 455,217.86, 628,151.90 and 261,586.38

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Solution

The fourth proportional to 455,217.86, 628,151.90 and 261,586.38 is: 360,961.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,217.86 : 628,151.90 = 261,586.38 : x
  2. Step 2: Convert to fraction form
    455,217.86/628,151.90 = 261,586.38/x
  3. Step 3: Cross multiply
    455,217.86x = 628,151.90 × 261,586.38
  4. Step 4: Simplify right side
    455,217.86x = 164,315,981,611.12
  5. Step 5: Solve for x
    x = 164,315,981,611.12/455,217.86
  6. Step 6: Final answer
    x = 360,961.19

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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.