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Finding the Fourth Proportional to 664,253.40, 996,380.10 and 383,442.60

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Solution

The fourth proportional to 664,253.40, 996,380.10 and 383,442.60 is: 575,163.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,253.40 : 996,380.10 = 383,442.60 : x
  2. Step 2: Convert to fraction form
    664,253.40/996,380.10 = 383,442.60/x
  3. Step 3: Cross multiply
    664,253.40x = 996,380.10 × 383,442.60
  4. Step 4: Simplify right side
    664,253.40x = 382,054,576,132.26
  5. Step 5: Solve for x
    x = 382,054,576,132.26/664,253.40
  6. Step 6: Final answer
    x = 575,163.90

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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.