Home / 681,399.66-940,331.55-395,085.83

Finding the Fourth Proportional to 681,399.66, 940,331.55 and 395,085.83

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Solution

The fourth proportional to 681,399.66, 940,331.55 and 395,085.83 is: 545,218.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,399.66 : 940,331.55 = 395,085.83 : x
  2. Step 2: Convert to fraction form
    681,399.66/940,331.55 = 395,085.83/x
  3. Step 3: Cross multiply
    681,399.66x = 940,331.55 × 395,085.83
  4. Step 4: Simplify right side
    681,399.66x = 371,511,666,205.28
  5. Step 5: Solve for x
    x = 371,511,666,205.28/681,399.66
  6. Step 6: Final answer
    x = 545,218.45

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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.