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Finding the Fourth Proportional to 557,079.31, 768,772.59 and 327,646.27

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Solution

The fourth proportional to 557,079.31, 768,772.59 and 327,646.27 is: 452,153.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,079.31 : 768,772.59 = 327,646.27 : x
  2. Step 2: Convert to fraction form
    557,079.31/768,772.59 = 327,646.27/x
  3. Step 3: Cross multiply
    557,079.31x = 768,772.59 × 327,646.27
  4. Step 4: Simplify right side
    557,079.31x = 251,885,469,669.81
  5. Step 5: Solve for x
    x = 251,885,469,669.81/557,079.31
  6. Step 6: Final answer
    x = 452,153.70

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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.