Home / 681,113.81-939,937.29-394,799.97

Finding the Fourth Proportional to 681,113.81, 939,937.29 and 394,799.97

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Solution

The fourth proportional to 681,113.81, 939,937.29 and 394,799.97 is: 544,824.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,113.81 : 939,937.29 = 394,799.97 : x
  2. Step 2: Convert to fraction form
    681,113.81/939,937.29 = 394,799.97/x
  3. Step 3: Cross multiply
    681,113.81x = 939,937.29 × 394,799.97
  4. Step 4: Simplify right side
    681,113.81x = 371,087,217,048.52
  5. Step 5: Solve for x
    x = 371,087,217,048.52/681,113.81
  6. Step 6: Final answer
    x = 544,824.10

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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.