Home / 681,403.75-940,337.25-395,089.91

Finding the Fourth Proportional to 681,403.75, 940,337.25 and 395,089.91

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Solution

The fourth proportional to 681,403.75, 940,337.25 and 395,089.91 is: 545,224.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,403.75 : 940,337.25 = 395,089.91 : x
  2. Step 2: Convert to fraction form
    681,403.75/940,337.25 = 395,089.91/x
  3. Step 3: Cross multiply
    681,403.75x = 940,337.25 × 395,089.91
  4. Step 4: Simplify right side
    681,403.75x = 371,517,754,770.46
  5. Step 5: Solve for x
    x = 371,517,754,770.46/681,403.75
  6. Step 6: Final answer
    x = 545,224.11

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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.