Home / 440,919.57-661,308.55-120,996.72

Finding the Fourth Proportional to 440,919.57, 661,308.55 and 120,996.72

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Solution

The fourth proportional to 440,919.57, 661,308.55 and 120,996.72 is: 181,475.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,919.57 : 661,308.55 = 120,996.72 : x
  2. Step 2: Convert to fraction form
    440,919.57/661,308.55 = 120,996.72/x
  3. Step 3: Cross multiply
    440,919.57x = 661,308.55 × 120,996.72
  4. Step 4: Simplify right side
    440,919.57x = 80,016,163,502.19
  5. Step 5: Solve for x
    x = 80,016,163,502.19/440,919.57
  6. Step 6: Final answer
    x = 181,475.65

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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.