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Finding the Fourth Proportional to 681,575.73, 940,571.43 and 371,477.79

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Solution

The fourth proportional to 681,575.73, 940,571.43 and 371,477.79 is: 512,637.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,575.73 : 940,571.43 = 371,477.79 : x
  2. Step 2: Convert to fraction form
    681,575.73/940,571.43 = 371,477.79/x
  3. Step 3: Cross multiply
    681,575.73x = 940,571.43 × 371,477.79
  4. Step 4: Simplify right side
    681,575.73x = 349,401,396,153.54
  5. Step 5: Solve for x
    x = 349,401,396,153.54/681,575.73
  6. Step 6: Final answer
    x = 512,637.67

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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.