Home / 1,185,215.49-1,635,601.71-641,351.28

Finding the Fourth Proportional to 1,185,215.49, 1,635,601.71 and 641,351.28

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Solution

The fourth proportional to 1,185,215.49, 1,635,601.71 and 641,351.28 is: 885,067.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,215.49 : 1,635,601.71 = 641,351.28 : x
  2. Step 2: Convert to fraction form
    1,185,215.49/1,635,601.71 = 641,351.28/x
  3. Step 3: Cross multiply
    1,185,215.49x = 1,635,601.71 × 641,351.28
  4. Step 4: Simplify right side
    1,185,215.49x = 1,048,995,250,278.69
  5. Step 5: Solve for x
    x = 1,048,995,250,278.69/1,185,215.49
  6. Step 6: Final answer
    x = 885,067.11

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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.