Home / 681,974.87-941,448.13-395,390.39

Finding the Fourth Proportional to 681,974.87, 941,448.13 and 395,390.39

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Solution

The fourth proportional to 681,974.87, 941,448.13 and 395,390.39 is: 545,825.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,974.87 : 941,448.13 = 395,390.39 : x
  2. Step 2: Convert to fraction form
    681,974.87/941,448.13 = 395,390.39/x
  3. Step 3: Cross multiply
    681,974.87x = 941,448.13 × 395,390.39
  4. Step 4: Simplify right side
    681,974.87x = 372,239,543,285.47
  5. Step 5: Solve for x
    x = 372,239,543,285.47/681,974.87
  6. Step 6: Final answer
    x = 545,825.89

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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.