Home / 681,039.95-939,835.07-394,726.10

Finding the Fourth Proportional to 681,039.95, 939,835.07 and 394,726.10

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Solution

The fourth proportional to 681,039.95, 939,835.07 and 394,726.10 is: 544,721.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,039.95 : 939,835.07 = 394,726.10 : x
  2. Step 2: Convert to fraction form
    681,039.95/939,835.07 = 394,726.10/x
  3. Step 3: Cross multiply
    681,039.95x = 939,835.07 × 394,726.10
  4. Step 4: Simplify right side
    681,039.95x = 370,977,435,160.73
  5. Step 5: Solve for x
    x = 370,977,435,160.73/681,039.95
  6. Step 6: Final answer
    x = 544,721.99

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1.5x scale

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.