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Finding the Fourth Proportional to 681,218.72, 940,073.68 and 375,289.01

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Solution

The fourth proportional to 681,218.72, 940,073.68 and 375,289.01 is: 517,894.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,218.72 : 940,073.68 = 375,289.01 : x
  2. Step 2: Convert to fraction form
    681,218.72/940,073.68 = 375,289.01/x
  3. Step 3: Cross multiply
    681,218.72x = 940,073.68 × 375,289.01
  4. Step 4: Simplify right side
    681,218.72x = 352,799,320,694.26
  5. Step 5: Solve for x
    x = 352,799,320,694.26/681,218.72
  6. Step 6: Final answer
    x = 517,894.34

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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.