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Finding the Fourth Proportional to 664,354.70, 996,532.05 and 309,404.60

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Solution

The fourth proportional to 664,354.70, 996,532.05 and 309,404.60 is: 464,106.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,354.70 : 996,532.05 = 309,404.60 : x
  2. Step 2: Convert to fraction form
    664,354.70/996,532.05 = 309,404.60/x
  3. Step 3: Cross multiply
    664,354.70x = 996,532.05 × 309,404.60
  4. Step 4: Simplify right side
    664,354.70x = 308,331,600,317.43
  5. Step 5: Solve for x
    x = 308,331,600,317.43/664,354.70
  6. Step 6: Final answer
    x = 464,106.90

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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.