Home / 681,457.05-940,397.85-395,003.79

Finding the Fourth Proportional to 681,457.05, 940,397.85 and 395,003.79

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Solution

The fourth proportional to 681,457.05, 940,397.85 and 395,003.79 is: 545,097.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,457.05 : 940,397.85 = 395,003.79 : x
  2. Step 2: Convert to fraction form
    681,457.05/940,397.85 = 395,003.79/x
  3. Step 3: Cross multiply
    681,457.05x = 940,397.85 × 395,003.79
  4. Step 4: Simplify right side
    681,457.05x = 371,460,714,857.85
  5. Step 5: Solve for x
    x = 371,460,714,857.85/681,457.05
  6. Step 6: Final answer
    x = 545,097.76

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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.