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Finding the Fourth Proportional to 681,581.24, 940,636.14 and 375,712

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Solution

The fourth proportional to 681,581.24, 940,636.14 and 375,712 is: 518,512.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,581.24 : 940,636.14 = 375,712 : x
  2. Step 2: Convert to fraction form
    681,581.24/940,636.14 = 375,712/x
  3. Step 3: Cross multiply
    681,581.24x = 940,636.14 × 375,712
  4. Step 4: Simplify right side
    681,581.24x = 353,408,285,431.68
  5. Step 5: Solve for x
    x = 353,408,285,431.68/681,581.24
  6. Step 6: Final answer
    x = 518,512.34

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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.