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Finding the Fourth Proportional to 519,960.65, 779,424.29 and 361,856.95

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Solution

The fourth proportional to 519,960.65, 779,424.29 and 361,856.95 is: 542,425.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,960.65 : 779,424.29 = 361,856.95 : x
  2. Step 2: Convert to fraction form
    519,960.65/779,424.29 = 361,856.95/x
  3. Step 3: Cross multiply
    519,960.65x = 779,424.29 × 361,856.95
  4. Step 4: Simplify right side
    519,960.65x = 282,040,096,335.32
  5. Step 5: Solve for x
    x = 282,040,096,335.32/519,960.65
  6. Step 6: Final answer
    x = 542,425.85

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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.