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Finding the Fourth Proportional to 613,112.92, 919,658.76 and 275,914.96

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Solution

The fourth proportional to 613,112.92, 919,658.76 and 275,914.96 is: 413,867.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,112.92 : 919,658.76 = 275,914.96 : x
  2. Step 2: Convert to fraction form
    613,112.92/919,658.76 = 275,914.96/x
  3. Step 3: Cross multiply
    613,112.92x = 919,658.76 × 275,914.96
  4. Step 4: Simplify right side
    613,112.92x = 253,747,609,979.05
  5. Step 5: Solve for x
    x = 253,747,609,979.05/613,112.92
  6. Step 6: Final answer
    x = 413,867.66

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1.5x scale

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.