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Finding the Fourth Proportional to 664,954.40, 996,027.60 and 440,422.40

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Solution

The fourth proportional to 664,954.40, 996,027.60 and 440,422.40 is: 659,703.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,954.40 : 996,027.60 = 440,422.40 : x
  2. Step 2: Convert to fraction form
    664,954.40/996,027.60 = 440,422.40/x
  3. Step 3: Cross multiply
    664,954.40x = 996,027.60 × 440,422.40
  4. Step 4: Simplify right side
    664,954.40x = 438,672,866,058.24
  5. Step 5: Solve for x
    x = 438,672,866,058.24/664,954.40
  6. Step 6: Final answer
    x = 659,703.68

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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.