Home / 1,004,122.81-1,385,343.06-641,758.78

Finding the Fourth Proportional to 1,004,122.81, 1,385,343.06 and 641,758.78

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Solution

The fourth proportional to 1,004,122.81, 1,385,343.06 and 641,758.78 is: 885,405.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,004,122.81 : 1,385,343.06 = 641,758.78 : x
  2. Step 2: Convert to fraction form
    1,004,122.81/1,385,343.06 = 641,758.78/x
  3. Step 3: Cross multiply
    1,004,122.81x = 1,385,343.06 × 641,758.78
  4. Step 4: Simplify right side
    1,004,122.81x = 889,056,072,067.07
  5. Step 5: Solve for x
    x = 889,056,072,067.07/1,004,122.81
  6. Step 6: Final answer
    x = 885,405.71

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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.