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Finding the Fourth Proportional to 490,906.86, 677,455.50 and 276,045.05

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Solution

The fourth proportional to 490,906.86, 677,455.50 and 276,045.05 is: 380,944.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,906.86 : 677,455.50 = 276,045.05 : x
  2. Step 2: Convert to fraction form
    490,906.86/677,455.50 = 276,045.05/x
  3. Step 3: Cross multiply
    490,906.86x = 677,455.50 × 276,045.05
  4. Step 4: Simplify right side
    490,906.86x = 187,008,233,983.00
  5. Step 5: Solve for x
    x = 187,008,233,983.00/490,906.86
  6. Step 6: Final answer
    x = 380,944.43

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1.5x scale

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.