Home / 815,379.16-1,222,791.92-309,818.68

Finding the Fourth Proportional to 815,379.16, 1,222,791.92 and 309,818.68

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Solution

The fourth proportional to 815,379.16, 1,222,791.92 and 309,818.68 is: 464,622.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,379.16 : 1,222,791.92 = 309,818.68 : x
  2. Step 2: Convert to fraction form
    815,379.16/1,222,791.92 = 309,818.68/x
  3. Step 3: Cross multiply
    815,379.16x = 1,222,791.92 × 309,818.68
  4. Step 4: Simplify right side
    815,379.16x = 378,843,778,569.07
  5. Step 5: Solve for x
    x = 378,843,778,569.07/815,379.16
  6. Step 6: Final answer
    x = 464,622.84

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.