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Finding the Fourth Proportional to 681,407.10, 940,383.62 and 375,483.31

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Solution

The fourth proportional to 681,407.10, 940,383.62 and 375,483.31 is: 518,190.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,407.10 : 940,383.62 = 375,483.31 : x
  2. Step 2: Convert to fraction form
    681,407.10/940,383.62 = 375,483.31/x
  3. Step 3: Cross multiply
    681,407.10x = 940,383.62 × 375,483.31
  4. Step 4: Simplify right side
    681,407.10x = 353,098,358,888.82
  5. Step 5: Solve for x
    x = 353,098,358,888.82/681,407.10
  6. Step 6: Final answer
    x = 518,190.02

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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.