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Finding the Fourth Proportional to 681,528.26, 940,669.27 and 423,600

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Solution

The fourth proportional to 681,528.26, 940,669.27 and 423,600 is: 584,667.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,528.26 : 940,669.27 = 423,600 : x
  2. Step 2: Convert to fraction form
    681,528.26/940,669.27 = 423,600/x
  3. Step 3: Cross multiply
    681,528.26x = 940,669.27 × 423,600
  4. Step 4: Simplify right side
    681,528.26x = 398,467,502,772
  5. Step 5: Solve for x
    x = 398,467,502,772/681,528.26
  6. Step 6: Final answer
    x = 584,667.62

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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.