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Finding the Fourth Proportional to 519,979.81, 779,871.08 and 253,472.29

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Solution

The fourth proportional to 519,979.81, 779,871.08 and 253,472.29 is: 380,160.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,979.81 : 779,871.08 = 253,472.29 : x
  2. Step 2: Convert to fraction form
    519,979.81/779,871.08 = 253,472.29/x
  3. Step 3: Cross multiply
    519,979.81x = 779,871.08 × 253,472.29
  4. Step 4: Simplify right side
    519,979.81x = 197,675,708,552.37
  5. Step 5: Solve for x
    x = 197,675,708,552.37/519,979.81
  6. Step 6: Final answer
    x = 380,160.35

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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.