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Finding the Fourth Proportional to 681,442.40, 940,396.73 and 375,529.76

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Solution

The fourth proportional to 681,442.40, 940,396.73 and 375,529.76 is: 518,234.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,442.40 : 940,396.73 = 375,529.76 : x
  2. Step 2: Convert to fraction form
    681,442.40/940,396.73 = 375,529.76/x
  3. Step 3: Cross multiply
    681,442.40x = 940,396.73 × 375,529.76
  4. Step 4: Simplify right side
    681,442.40x = 353,146,951,742.05
  5. Step 5: Solve for x
    x = 353,146,951,742.05/681,442.40
  6. Step 6: Final answer
    x = 518,234.48

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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.