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Finding the Fourth Proportional to 578,660.31, 798,523.34 and 320,519.79

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Solution

The fourth proportional to 578,660.31, 798,523.34 and 320,519.79 is: 442,301.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,660.31 : 798,523.34 = 320,519.79 : x
  2. Step 2: Convert to fraction form
    578,660.31/798,523.34 = 320,519.79/x
  3. Step 3: Cross multiply
    578,660.31x = 798,523.34 × 320,519.79
  4. Step 4: Simplify right side
    578,660.31x = 255,942,531,644.30
  5. Step 5: Solve for x
    x = 255,942,531,644.30/578,660.31
  6. Step 6: Final answer
    x = 442,301.86

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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.