Home / 694,745.78-958,766.20-388,819.76

Finding the Fourth Proportional to 694,745.78, 958,766.20 and 388,819.76

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Solution

The fourth proportional to 694,745.78, 958,766.20 and 388,819.76 is: 536,580.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,745.78 : 958,766.20 = 388,819.76 : x
  2. Step 2: Convert to fraction form
    694,745.78/958,766.20 = 388,819.76/x
  3. Step 3: Cross multiply
    694,745.78x = 958,766.20 × 388,819.76
  4. Step 4: Simplify right side
    694,745.78x = 372,787,238,014.23
  5. Step 5: Solve for x
    x = 372,787,238,014.23/694,745.78
  6. Step 6: Final answer
    x = 536,580.79

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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.