Home / 681,072.98-1,021,610.75-639,455.54

Finding the Fourth Proportional to 681,072.98, 1,021,610.75 and 639,455.54

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Solution

The fourth proportional to 681,072.98, 1,021,610.75 and 639,455.54 is: 959,184.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,072.98 : 1,021,610.75 = 639,455.54 : x
  2. Step 2: Convert to fraction form
    681,072.98/1,021,610.75 = 639,455.54/x
  3. Step 3: Cross multiply
    681,072.98x = 1,021,610.75 × 639,455.54
  4. Step 4: Simplify right side
    681,072.98x = 653,274,645,505.72
  5. Step 5: Solve for x
    x = 653,274,645,505.72/681,072.98
  6. Step 6: Final answer
    x = 959,184.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.