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Finding the Fourth Proportional to 781,664.31, 1,163,955.31 and 752,935.64

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Solution

The fourth proportional to 781,664.31, 1,163,955.31 and 752,935.64 is: 1,121,176.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,664.31 : 1,163,955.31 = 752,935.64 : x
  2. Step 2: Convert to fraction form
    781,664.31/1,163,955.31 = 752,935.64/x
  3. Step 3: Cross multiply
    781,664.31x = 1,163,955.31 × 752,935.64
  4. Step 4: Simplify right side
    781,664.31x = 876,383,436,266.25
  5. Step 5: Solve for x
    x = 876,383,436,266.25/781,664.31
  6. Step 6: Final answer
    x = 1,121,176.22

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.