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Finding the Fourth Proportional to 1,435,973.09, 1,981,936.92 and 855,536.24

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Solution

The fourth proportional to 1,435,973.09, 1,981,936.92 and 855,536.24 is: 1,180,815.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,435,973.09 : 1,981,936.92 = 855,536.24 : x
  2. Step 2: Convert to fraction form
    1,435,973.09/1,981,936.92 = 855,536.24/x
  3. Step 3: Cross multiply
    1,435,973.09x = 1,981,936.92 × 855,536.24
  4. Step 4: Simplify right side
    1,435,973.09x = 1,695,618,856,176.30
  5. Step 5: Solve for x
    x = 1,695,618,856,176.30/1,435,973.09
  6. Step 6: Final answer
    x = 1,180,815.21

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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.