Home / 440,764.11-661,109.40-312,148.62

Finding the Fourth Proportional to 440,764.11, 661,109.40 and 312,148.62

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Solution

The fourth proportional to 440,764.11, 661,109.40 and 312,148.62 is: 468,196.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,764.11 : 661,109.40 = 312,148.62 : x
  2. Step 2: Convert to fraction form
    440,764.11/661,109.40 = 312,148.62/x
  3. Step 3: Cross multiply
    440,764.11x = 661,109.40 × 312,148.62
  4. Step 4: Simplify right side
    440,764.11x = 206,364,386,879.03
  5. Step 5: Solve for x
    x = 206,364,386,879.03/440,764.11
  6. Step 6: Final answer
    x = 468,196.89

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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.