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Finding the Fourth Proportional to 681,632.70, 940,659.70 and 375,721.06

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Solution

The fourth proportional to 681,632.70, 940,659.70 and 375,721.06 is: 518,498.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,632.70 : 940,659.70 = 375,721.06 : x
  2. Step 2: Convert to fraction form
    681,632.70/940,659.70 = 375,721.06/x
  3. Step 3: Cross multiply
    681,632.70x = 940,659.70 × 375,721.06
  4. Step 4: Simplify right side
    681,632.70x = 353,425,659,583.28
  5. Step 5: Solve for x
    x = 353,425,659,583.28/681,632.70
  6. Step 6: Final answer
    x = 518,498.69

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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.