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Finding the Fourth Proportional to 664,999.40, 996,095.10 and 440,467.40

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Solution

The fourth proportional to 664,999.40, 996,095.10 and 440,467.40 is: 659,771.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,999.40 : 996,095.10 = 440,467.40 : x
  2. Step 2: Convert to fraction form
    664,999.40/996,095.10 = 440,467.40/x
  3. Step 3: Cross multiply
    664,999.40x = 996,095.10 × 440,467.40
  4. Step 4: Simplify right side
    664,999.40x = 438,747,418,849.74
  5. Step 5: Solve for x
    x = 438,747,418,849.74/664,999.40
  6. Step 6: Final answer
    x = 659,771.15

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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.