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Finding the Fourth Proportional to 664,654.80, 996,301.80 and 327,176.40

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Solution

The fourth proportional to 664,654.80, 996,301.80 and 327,176.40 is: 490,429.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,654.80 : 996,301.80 = 327,176.40 : x
  2. Step 2: Convert to fraction form
    664,654.80/996,301.80 = 327,176.40/x
  3. Step 3: Cross multiply
    664,654.80x = 996,301.80 × 327,176.40
  4. Step 4: Simplify right side
    664,654.80x = 325,966,436,237.52
  5. Step 5: Solve for x
    x = 325,966,436,237.52/664,654.80
  6. Step 6: Final answer
    x = 490,429.67

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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.