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Finding the Fourth Proportional to 664,884.80, 997,327.20 and 384,257.60

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Solution

The fourth proportional to 664,884.80, 997,327.20 and 384,257.60 is: 576,386.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,884.80 : 997,327.20 = 384,257.60 : x
  2. Step 2: Convert to fraction form
    664,884.80/997,327.20 = 384,257.60/x
  3. Step 3: Cross multiply
    664,884.80x = 997,327.20 × 384,257.60
  4. Step 4: Simplify right side
    664,884.80x = 383,230,556,286.72
  5. Step 5: Solve for x
    x = 383,230,556,286.72/664,884.80
  6. Step 6: Final answer
    x = 576,386.40

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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.