Home / 681,400.04-940,332.08-395,086.20

Finding the Fourth Proportional to 681,400.04, 940,332.08 and 395,086.20

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Solution

The fourth proportional to 681,400.04, 940,332.08 and 395,086.20 is: 545,218.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,400.04 : 940,332.08 = 395,086.20 : x
  2. Step 2: Convert to fraction form
    681,400.04/940,332.08 = 395,086.20/x
  3. Step 3: Cross multiply
    681,400.04x = 940,332.08 × 395,086.20
  4. Step 4: Simplify right side
    681,400.04x = 371,512,226,249.87
  5. Step 5: Solve for x
    x = 371,512,226,249.87/681,400.04
  6. Step 6: Final answer
    x = 545,218.97

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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.