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Finding the Fourth Proportional to 681,531.26, 940,673.41 and 423,603

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Solution

The fourth proportional to 681,531.26, 940,673.41 and 423,603 is: 584,671.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,531.26 : 940,673.41 = 423,603 : x
  2. Step 2: Convert to fraction form
    681,531.26/940,673.41 = 423,603/x
  3. Step 3: Cross multiply
    681,531.26x = 940,673.41 × 423,603
  4. Step 4: Simplify right side
    681,531.26x = 398,472,078,496.23
  5. Step 5: Solve for x
    x = 398,472,078,496.23/681,531.26
  6. Step 6: Final answer
    x = 584,671.76

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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.