Home / 667,720.80-1,001,581.20-194,421.60

Finding the Fourth Proportional to 667,720.80, 1,001,581.20 and 194,421.60

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Solution

The fourth proportional to 667,720.80, 1,001,581.20 and 194,421.60 is: 291,632.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,720.80 : 1,001,581.20 = 194,421.60 : x
  2. Step 2: Convert to fraction form
    667,720.80/1,001,581.20 = 194,421.60/x
  3. Step 3: Cross multiply
    667,720.80x = 1,001,581.20 × 194,421.60
  4. Step 4: Simplify right side
    667,720.80x = 194,729,019,433.92
  5. Step 5: Solve for x
    x = 194,729,019,433.92/667,720.80
  6. Step 6: Final answer
    x = 291,632.40

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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.