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Finding the Fourth Proportional to 557,490.72, 769,339.26 and 328,056.96

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Solution

The fourth proportional to 557,490.72, 769,339.26 and 328,056.96 is: 452,719.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,490.72 : 769,339.26 = 328,056.96 : x
  2. Step 2: Convert to fraction form
    557,490.72/769,339.26 = 328,056.96/x
  3. Step 3: Cross multiply
    557,490.72x = 769,339.26 × 328,056.96
  4. Step 4: Simplify right side
    557,490.72x = 252,387,098,844.25
  5. Step 5: Solve for x
    x = 252,387,098,844.25/557,490.72
  6. Step 6: Final answer
    x = 452,719.82

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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.