Home / 1,185,249.85-1,635,649.09-641,385.57

Finding the Fourth Proportional to 1,185,249.85, 1,635,649.09 and 641,385.57

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Solution

The fourth proportional to 1,185,249.85, 1,635,649.09 and 641,385.57 is: 885,114.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,249.85 : 1,635,649.09 = 641,385.57 : x
  2. Step 2: Convert to fraction form
    1,185,249.85/1,635,649.09 = 641,385.57/x
  3. Step 3: Cross multiply
    1,185,249.85x = 1,635,649.09 × 641,385.57
  4. Step 4: Simplify right side
    1,185,249.85x = 1,049,081,727,998.75
  5. Step 5: Solve for x
    x = 1,049,081,727,998.75/1,185,249.85
  6. Step 6: Final answer
    x = 885,114.42

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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.