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Finding the Fourth Proportional to 722,401.12, 996,930.12 and 395,745.34

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Solution

The fourth proportional to 722,401.12, 996,930.12 and 395,745.34 is: 546,137.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,401.12 : 996,930.12 = 395,745.34 : x
  2. Step 2: Convert to fraction form
    722,401.12/996,930.12 = 395,745.34/x
  3. Step 3: Cross multiply
    722,401.12x = 996,930.12 × 395,745.34
  4. Step 4: Simplify right side
    722,401.12x = 394,530,449,295.64
  5. Step 5: Solve for x
    x = 394,530,449,295.64/722,401.12
  6. Step 6: Final answer
    x = 546,137.65

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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.