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Finding the Fourth Proportional to 664,550.40, 996,777.40 and 259,666.48

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Solution

The fourth proportional to 664,550.40, 996,777.40 and 259,666.48 is: 389,480.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,550.40 : 996,777.40 = 259,666.48 : x
  2. Step 2: Convert to fraction form
    664,550.40/996,777.40 = 259,666.48/x
  3. Step 3: Cross multiply
    664,550.40x = 996,777.40 × 259,666.48
  4. Step 4: Simplify right side
    664,550.40x = 258,829,672,519.33
  5. Step 5: Solve for x
    x = 258,829,672,519.33/664,550.40
  6. Step 6: Final answer
    x = 389,480.88

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1.5x scale

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.