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Finding the Fourth Proportional to 664,329.30, 996,623.55 and 285,249.30

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Solution

The fourth proportional to 664,329.30, 996,623.55 and 285,249.30 is: 427,929.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,329.30 : 996,623.55 = 285,249.30 : x
  2. Step 2: Convert to fraction form
    664,329.30/996,623.55 = 285,249.30/x
  3. Step 3: Cross multiply
    664,329.30x = 996,623.55 × 285,249.30
  4. Step 4: Simplify right side
    664,329.30x = 284,286,170,001.02
  5. Step 5: Solve for x
    x = 284,286,170,001.02/664,329.30
  6. Step 6: Final answer
    x = 427,929.60

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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.