Home / 1,221,514.09-1,685,691.41-677,649.85

Finding the Fourth Proportional to 1,221,514.09, 1,685,691.41 and 677,649.85

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Solution

The fourth proportional to 1,221,514.09, 1,685,691.41 and 677,649.85 is: 935,157.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,514.09 : 1,685,691.41 = 677,649.85 : x
  2. Step 2: Convert to fraction form
    1,221,514.09/1,685,691.41 = 677,649.85/x
  3. Step 3: Cross multiply
    1,221,514.09x = 1,685,691.41 × 677,649.85
  4. Step 4: Simplify right side
    1,221,514.09x = 1,142,308,523,530.31
  5. Step 5: Solve for x
    x = 1,142,308,523,530.31/1,221,514.09
  6. Step 6: Final answer
    x = 935,157.88

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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.