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Finding the Fourth Proportional to 681,559.05, 940,513.11 and 375,634.50

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Solution

The fourth proportional to 681,559.05, 940,513.11 and 375,634.50 is: 518,354.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,559.05 : 940,513.11 = 375,634.50 : x
  2. Step 2: Convert to fraction form
    681,559.05/940,513.11 = 375,634.50/x
  3. Step 3: Cross multiply
    681,559.05x = 940,513.11 × 375,634.50
  4. Step 4: Simplify right side
    681,559.05x = 353,289,171,818.30
  5. Step 5: Solve for x
    x = 353,289,171,818.30/681,559.05
  6. Step 6: Final answer
    x = 518,354.46

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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.