Home / 681,130.53-939,960.33-394,816.68

Finding the Fourth Proportional to 681,130.53, 939,960.33 and 394,816.68

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Solution

The fourth proportional to 681,130.53, 939,960.33 and 394,816.68 is: 544,847.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,130.53 : 939,960.33 = 394,816.68 : x
  2. Step 2: Convert to fraction form
    681,130.53/939,960.33 = 394,816.68/x
  3. Step 3: Cross multiply
    681,130.53x = 939,960.33 × 394,816.68
  4. Step 4: Simplify right side
    681,130.53x = 371,112,016,822.30
  5. Step 5: Solve for x
    x = 371,112,016,822.30/681,130.53
  6. Step 6: Final answer
    x = 544,847.13

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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.