Home / 681,400.47-940,332.68-395,086.63

Finding the Fourth Proportional to 681,400.47, 940,332.68 and 395,086.63

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Solution

The fourth proportional to 681,400.47, 940,332.68 and 395,086.63 is: 545,219.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,400.47 : 940,332.68 = 395,086.63 : x
  2. Step 2: Convert to fraction form
    681,400.47/940,332.68 = 395,086.63/x
  3. Step 3: Cross multiply
    681,400.47x = 940,332.68 × 395,086.63
  4. Step 4: Simplify right side
    681,400.47x = 371,512,869,620.07
  5. Step 5: Solve for x
    x = 371,512,869,620.07/681,400.47
  6. Step 6: Final answer
    x = 545,219.57

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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.