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Finding the Fourth Proportional to 681,415.09, 940,394.50 and 375,491.52

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Solution

The fourth proportional to 681,415.09, 940,394.50 and 375,491.52 is: 518,201.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,415.09 : 940,394.50 = 375,491.52 : x
  2. Step 2: Convert to fraction form
    681,415.09/940,394.50 = 375,491.52/x
  3. Step 3: Cross multiply
    681,415.09x = 940,394.50 × 375,491.52
  4. Step 4: Simplify right side
    681,415.09x = 353,110,159,265.91
  5. Step 5: Solve for x
    x = 353,110,159,265.91/681,415.09
  6. Step 6: Final answer
    x = 518,201.26

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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.