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Finding the Fourth Proportional to 664,400.22, 996,564.78 and 327,104.64

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Solution

The fourth proportional to 664,400.22, 996,564.78 and 327,104.64 is: 490,639.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,400.22 : 996,564.78 = 327,104.64 : x
  2. Step 2: Convert to fraction form
    664,400.22/996,564.78 = 327,104.64/x
  3. Step 3: Cross multiply
    664,400.22x = 996,564.78 × 327,104.64
  4. Step 4: Simplify right side
    664,400.22x = 325,980,963,598.58
  5. Step 5: Solve for x
    x = 325,980,963,598.58/664,400.22
  6. Step 6: Final answer
    x = 490,639.46

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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.