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Finding the Fourth Proportional to 479,626.65, 661,906.17 and 275,743.53

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Solution

The fourth proportional to 479,626.65, 661,906.17 and 275,743.53 is: 380,538.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,626.65 : 661,906.17 = 275,743.53 : x
  2. Step 2: Convert to fraction form
    479,626.65/661,906.17 = 275,743.53/x
  3. Step 3: Cross multiply
    479,626.65x = 661,906.17 × 275,743.53
  4. Step 4: Simplify right side
    479,626.65x = 182,516,343,844.58
  5. Step 5: Solve for x
    x = 182,516,343,844.58/479,626.65
  6. Step 6: Final answer
    x = 380,538.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.