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Finding the Fourth Proportional to 519,979.94, 779,871.27 and 253,472.42

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Solution

The fourth proportional to 519,979.94, 779,871.27 and 253,472.42 is: 380,160.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,979.94 : 779,871.27 = 253,472.42 : x
  2. Step 2: Convert to fraction form
    519,979.94/779,871.27 = 253,472.42/x
  3. Step 3: Cross multiply
    519,979.94x = 779,871.27 × 253,472.42
  4. Step 4: Simplify right side
    519,979.94x = 197,675,858,095.37
  5. Step 5: Solve for x
    x = 197,675,858,095.37/519,979.94
  6. Step 6: Final answer
    x = 380,160.55

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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.