Home / 681,218.56-939,992.88-394,677.28

Finding the Fourth Proportional to 681,218.56, 939,992.88 and 394,677.28

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Solution

The fourth proportional to 681,218.56, 939,992.88 and 394,677.28 is: 544,603.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,218.56 : 939,992.88 = 394,677.28 : x
  2. Step 2: Convert to fraction form
    681,218.56/939,992.88 = 394,677.28/x
  3. Step 3: Cross multiply
    681,218.56x = 939,992.88 × 394,677.28
  4. Step 4: Simplify right side
    681,218.56x = 370,993,833,097.77
  5. Step 5: Solve for x
    x = 370,993,833,097.77/681,218.56
  6. Step 6: Final answer
    x = 544,603.24

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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.