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Finding the Fourth Proportional to 681,446.05, 940,401.77 and 375,533.41

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Solution

The fourth proportional to 681,446.05, 940,401.77 and 375,533.41 is: 518,239.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,446.05 : 940,401.77 = 375,533.41 : x
  2. Step 2: Convert to fraction form
    681,446.05/940,401.77 = 375,533.41/x
  3. Step 3: Cross multiply
    681,446.05x = 940,401.77 × 375,533.41
  4. Step 4: Simplify right side
    681,446.05x = 353,152,279,229.46
  5. Step 5: Solve for x
    x = 353,152,279,229.46/681,446.05
  6. Step 6: Final answer
    x = 518,239.53

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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.