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Finding the Fourth Proportional to 517,991.62, 775,526.59 and 274,280.44

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Solution

The fourth proportional to 517,991.62, 775,526.59 and 274,280.44 is: 410,647.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,991.62 : 775,526.59 = 274,280.44 : x
  2. Step 2: Convert to fraction form
    517,991.62/775,526.59 = 274,280.44/x
  3. Step 3: Cross multiply
    517,991.62x = 775,526.59 × 274,280.44
  4. Step 4: Simplify right side
    517,991.62x = 212,711,769,773.57
  5. Step 5: Solve for x
    x = 212,711,769,773.57/517,991.62
  6. Step 6: Final answer
    x = 410,647.13

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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.