Home / 986,857.21-1,361,786.93-557,179.75

Finding the Fourth Proportional to 986,857.21, 1,361,786.93 and 557,179.75

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Solution

The fourth proportional to 986,857.21, 1,361,786.93 and 557,179.75 is: 768,865.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,857.21 : 1,361,786.93 = 557,179.75 : x
  2. Step 2: Convert to fraction form
    986,857.21/1,361,786.93 = 557,179.75/x
  3. Step 3: Cross multiply
    986,857.21x = 1,361,786.93 × 557,179.75
  4. Step 4: Simplify right side
    986,857.21x = 758,760,101,210.67
  5. Step 5: Solve for x
    x = 758,760,101,210.67/986,857.21
  6. Step 6: Final answer
    x = 768,865.13

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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.