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Finding the Fourth Proportional to 681,813.45, 940,860.36 and 375,874.02

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Solution

The fourth proportional to 681,813.45, 940,860.36 and 375,874.02 is: 518,682.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,813.45 : 940,860.36 = 375,874.02 : x
  2. Step 2: Convert to fraction form
    681,813.45/940,860.36 = 375,874.02/x
  3. Step 3: Cross multiply
    681,813.45x = 940,860.36 × 375,874.02
  4. Step 4: Simplify right side
    681,813.45x = 353,644,965,771.85
  5. Step 5: Solve for x
    x = 353,644,965,771.85/681,813.45
  6. Step 6: Final answer
    x = 518,682.88

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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.