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Finding the Fourth Proportional to 490,737.66, 677,241.99 and 275,945.10

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Solution

The fourth proportional to 490,737.66, 677,241.99 and 275,945.10 is: 380,817.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,737.66 : 677,241.99 = 275,945.10 : x
  2. Step 2: Convert to fraction form
    490,737.66/677,241.99 = 275,945.10/x
  3. Step 3: Cross multiply
    490,737.66x = 677,241.99 × 275,945.10
  4. Step 4: Simplify right side
    490,737.66x = 186,881,608,654.75
  5. Step 5: Solve for x
    x = 186,881,608,654.75/490,737.66
  6. Step 6: Final answer
    x = 380,817.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.