Home / 639,100.52-882,278.31-397,460.94

Finding the Fourth Proportional to 639,100.52, 882,278.31 and 397,460.94

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Solution

The fourth proportional to 639,100.52, 882,278.31 and 397,460.94 is: 548,694.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,100.52 : 882,278.31 = 397,460.94 : x
  2. Step 2: Convert to fraction form
    639,100.52/882,278.31 = 397,460.94/x
  3. Step 3: Cross multiply
    639,100.52x = 882,278.31 × 397,460.94
  4. Step 4: Simplify right side
    639,100.52x = 350,671,166,434.21
  5. Step 5: Solve for x
    x = 350,671,166,434.21/639,100.52
  6. Step 6: Final answer
    x = 548,694.85

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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.