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Finding the Fourth Proportional to 681,555.72, 940,707.24 and 423,627.50

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Solution

The fourth proportional to 681,555.72, 940,707.24 and 423,627.50 is: 584,705.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,555.72 : 940,707.24 = 423,627.50 : x
  2. Step 2: Convert to fraction form
    681,555.72/940,707.24 = 423,627.50/x
  3. Step 3: Cross multiply
    681,555.72x = 940,707.24 × 423,627.50
  4. Step 4: Simplify right side
    681,555.72x = 398,509,456,313.10
  5. Step 5: Solve for x
    x = 398,509,456,313.10/681,555.72
  6. Step 6: Final answer
    x = 584,705.61

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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.