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Finding the Fourth Proportional to 664,999.90, 996,095.85 and 440,467.90

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Solution

The fourth proportional to 664,999.90, 996,095.85 and 440,467.90 is: 659,771.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,999.90 : 996,095.85 = 440,467.90 : x
  2. Step 2: Convert to fraction form
    664,999.90/996,095.85 = 440,467.90/x
  3. Step 3: Cross multiply
    664,999.90x = 996,095.85 × 440,467.90
  4. Step 4: Simplify right side
    664,999.90x = 438,748,247,248.22
  5. Step 5: Solve for x
    x = 438,748,247,248.22/664,999.90
  6. Step 6: Final answer
    x = 659,771.90

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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.