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Finding the Fourth Proportional to 519,253.58, 778,601.73 and 266,429.90

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Solution

The fourth proportional to 519,253.58, 778,601.73 and 266,429.90 is: 399,501.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,253.58 : 778,601.73 = 266,429.90 : x
  2. Step 2: Convert to fraction form
    519,253.58/778,601.73 = 266,429.90/x
  3. Step 3: Cross multiply
    519,253.58x = 778,601.73 × 266,429.90
  4. Step 4: Simplify right side
    519,253.58x = 207,442,781,063.73
  5. Step 5: Solve for x
    x = 207,442,781,063.73/519,253.58
  6. Step 6: Final answer
    x = 399,501.88

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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.