Home / 1,292,481.91-1,782,463.89-809,091.10

Finding the Fourth Proportional to 1,292,481.91, 1,782,463.89 and 809,091.10

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Solution

The fourth proportional to 1,292,481.91, 1,782,463.89 and 809,091.10 is: 1,115,818.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,481.91 : 1,782,463.89 = 809,091.10 : x
  2. Step 2: Convert to fraction form
    1,292,481.91/1,782,463.89 = 809,091.10/x
  3. Step 3: Cross multiply
    1,292,481.91x = 1,782,463.89 × 809,091.10
  4. Step 4: Simplify right side
    1,292,481.91x = 1,442,175,669,470.38
  5. Step 5: Solve for x
    x = 1,442,175,669,470.38/1,292,481.91
  6. Step 6: Final answer
    x = 1,115,818.84

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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.