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Finding the Fourth Proportional to 617,025.70, 925,356.99 and 279,871.30

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Solution

The fourth proportional to 617,025.70, 925,356.99 and 279,871.30 is: 419,724.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,025.70 : 925,356.99 = 279,871.30 : x
  2. Step 2: Convert to fraction form
    617,025.70/925,356.99 = 279,871.30/x
  3. Step 3: Cross multiply
    617,025.70x = 925,356.99 × 279,871.30
  4. Step 4: Simplify right side
    617,025.70x = 258,980,863,755.39
  5. Step 5: Solve for x
    x = 258,980,863,755.39/617,025.70
  6. Step 6: Final answer
    x = 419,724.60

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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.