Home / 681,345.03-940,048.01-394,809.75

Finding the Fourth Proportional to 681,345.03, 940,048.01 and 394,809.75

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Solution

The fourth proportional to 681,345.03, 940,048.01 and 394,809.75 is: 544,716.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,345.03 : 940,048.01 = 394,809.75 : x
  2. Step 2: Convert to fraction form
    681,345.03/940,048.01 = 394,809.75/x
  3. Step 3: Cross multiply
    681,345.03x = 940,048.01 × 394,809.75
  4. Step 4: Simplify right side
    681,345.03x = 371,140,117,842.05
  5. Step 5: Solve for x
    x = 371,140,117,842.05/681,345.03
  6. Step 6: Final answer
    x = 544,716.85

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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.