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Finding the Fourth Proportional to 512,452.68, 769,151.52 and 259,910.40

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Solution

The fourth proportional to 512,452.68, 769,151.52 and 259,910.40 is: 390,105.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,452.68 : 769,151.52 = 259,910.40 : x
  2. Step 2: Convert to fraction form
    512,452.68/769,151.52 = 259,910.40/x
  3. Step 3: Cross multiply
    512,452.68x = 769,151.52 × 259,910.40
  4. Step 4: Simplify right side
    512,452.68x = 199,910,479,223.81
  5. Step 5: Solve for x
    x = 199,910,479,223.81/512,452.68
  6. Step 6: Final answer
    x = 390,105.25

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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.