Home / 639,108.15-882,288.84-397,468.56

Finding the Fourth Proportional to 639,108.15, 882,288.84 and 397,468.56

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Solution

The fourth proportional to 639,108.15, 882,288.84 and 397,468.56 is: 548,705.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,108.15 : 882,288.84 = 397,468.56 : x
  2. Step 2: Convert to fraction form
    639,108.15/882,288.84 = 397,468.56/x
  3. Step 3: Cross multiply
    639,108.15x = 882,288.84 × 397,468.56
  4. Step 4: Simplify right side
    639,108.15x = 350,682,074,738.87
  5. Step 5: Solve for x
    x = 350,682,074,738.87/639,108.15
  6. Step 6: Final answer
    x = 548,705.37

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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.