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Finding the Fourth Proportional to 519,979.56, 779,870.70 and 253,472.04

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Solution

The fourth proportional to 519,979.56, 779,870.70 and 253,472.04 is: 380,159.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,979.56 : 779,870.70 = 253,472.04 : x
  2. Step 2: Convert to fraction form
    519,979.56/779,870.70 = 253,472.04/x
  3. Step 3: Cross multiply
    519,979.56x = 779,870.70 × 253,472.04
  4. Step 4: Simplify right side
    519,979.56x = 197,675,419,848.59
  5. Step 5: Solve for x
    x = 197,675,419,848.59/519,979.56
  6. Step 6: Final answer
    x = 380,159.98

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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.