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Finding the Fourth Proportional to 664,584.70, 996,877.05 and 309,634.60

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Solution

The fourth proportional to 664,584.70, 996,877.05 and 309,634.60 is: 464,451.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,584.70 : 996,877.05 = 309,634.60 : x
  2. Step 2: Convert to fraction form
    664,584.70/996,877.05 = 309,634.60/x
  3. Step 3: Cross multiply
    664,584.70x = 996,877.05 × 309,634.60
  4. Step 4: Simplify right side
    664,584.70x = 308,667,626,625.93
  5. Step 5: Solve for x
    x = 308,667,626,625.93/664,584.70
  6. Step 6: Final answer
    x = 464,451.90

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Similar ratio
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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.