Home / 859,389.75-1,186,067.21-519,860.43

Finding the Fourth Proportional to 859,389.75, 1,186,067.21 and 519,860.43

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Solution

The fourth proportional to 859,389.75, 1,186,067.21 and 519,860.43 is: 717,473.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,389.75 : 1,186,067.21 = 519,860.43 : x
  2. Step 2: Convert to fraction form
    859,389.75/1,186,067.21 = 519,860.43/x
  3. Step 3: Cross multiply
    859,389.75x = 1,186,067.21 × 519,860.43
  4. Step 4: Simplify right side
    859,389.75x = 616,589,407,200.20
  5. Step 5: Solve for x
    x = 616,589,407,200.20/859,389.75
  6. Step 6: Final answer
    x = 717,473.54

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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.