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Finding the Fourth Proportional to 681,806.48, 940,959.52 and 509,425.36

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Solution

The fourth proportional to 681,806.48, 940,959.52 and 509,425.36 is: 703,056.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,806.48 : 940,959.52 = 509,425.36 : x
  2. Step 2: Convert to fraction form
    681,806.48/940,959.52 = 509,425.36/x
  3. Step 3: Cross multiply
    681,806.48x = 940,959.52 × 509,425.36
  4. Step 4: Simplify right side
    681,806.48x = 479,348,642,221.43
  5. Step 5: Solve for x
    x = 479,348,642,221.43/681,806.48
  6. Step 6: Final answer
    x = 703,056.74

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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.