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Finding the Fourth Proportional to 664,996.40, 996,090.60 and 440,464.40

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Solution

The fourth proportional to 664,996.40, 996,090.60 and 440,464.40 is: 659,766.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,996.40 : 996,090.60 = 440,464.40 : x
  2. Step 2: Convert to fraction form
    664,996.40/996,090.60 = 440,464.40/x
  3. Step 3: Cross multiply
    664,996.40x = 996,090.60 × 440,464.40
  4. Step 4: Simplify right side
    664,996.40x = 438,742,448,474.64
  5. Step 5: Solve for x
    x = 438,742,448,474.64/664,996.40
  6. Step 6: Final answer
    x = 659,766.65

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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.