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Finding the Fourth Proportional to 664,281,662.70, 996,422,494.05 and 255,351,153.90

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Solution

The fourth proportional to 664,281,662.70, 996,422,494.05 and 255,351,153.90 is: 383,026,730.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,281,662.70 : 996,422,494.05 = 255,351,153.90 : x
  2. Step 2: Convert to fraction form
    664,281,662.70/996,422,494.05 = 255,351,153.90/x
  3. Step 3: Cross multiply
    664,281,662.70x = 996,422,494.05 × 255,351,153.90
  4. Step 4: Simplify right side
    664,281,662.70x = 254,437,633,627,583,392
  5. Step 5: Solve for x
    x = 254,437,633,627,583,392/664,281,662.70
  6. Step 6: Final answer
    x = 383,026,730.85

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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.