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Finding the Fourth Proportional to 664,337.80, 996,636.30 and 285,257.80

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Solution

The fourth proportional to 664,337.80, 996,636.30 and 285,257.80 is: 427,942.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,337.80 : 996,636.30 = 285,257.80 : x
  2. Step 2: Convert to fraction form
    664,337.80/996,636.30 = 285,257.80/x
  3. Step 3: Cross multiply
    664,337.80x = 996,636.30 × 285,257.80
  4. Step 4: Simplify right side
    664,337.80x = 284,298,278,338.14
  5. Step 5: Solve for x
    x = 284,298,278,338.14/664,337.80
  6. Step 6: Final answer
    x = 427,942.35

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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.