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Finding the Fourth Proportional to 618,963.01, 928,448 and 281,767.80

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Solution

The fourth proportional to 618,963.01, 928,448 and 281,767.80 is: 422,653.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,963.01 : 928,448 = 281,767.80 : x
  2. Step 2: Convert to fraction form
    618,963.01/928,448 = 281,767.80/x
  3. Step 3: Cross multiply
    618,963.01x = 928,448 × 281,767.80
  4. Step 4: Simplify right side
    618,963.01x = 261,606,750,374.40
  5. Step 5: Solve for x
    x = 261,606,750,374.40/618,963.01
  6. Step 6: Final answer
    x = 422,653.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.