Home / 1,004,121.81-1,385,341.68-641,757.78

Finding the Fourth Proportional to 1,004,121.81, 1,385,341.68 and 641,757.78

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Solution

The fourth proportional to 1,004,121.81, 1,385,341.68 and 641,757.78 is: 885,404.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,004,121.81 : 1,385,341.68 = 641,757.78 : x
  2. Step 2: Convert to fraction form
    1,004,121.81/1,385,341.68 = 641,757.78/x
  3. Step 3: Cross multiply
    1,004,121.81x = 1,385,341.68 × 641,757.78
  4. Step 4: Simplify right side
    1,004,121.81x = 889,053,801,098.27
  5. Step 5: Solve for x
    x = 889,053,801,098.27/1,004,121.81
  6. Step 6: Final answer
    x = 885,404.33

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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.