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Finding the Fourth Proportional to 579,965.72, 800,351.07 and 321,881.63

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Solution

The fourth proportional to 579,965.72, 800,351.07 and 321,881.63 is: 444,195.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,965.72 : 800,351.07 = 321,881.63 : x
  2. Step 2: Convert to fraction form
    579,965.72/800,351.07 = 321,881.63/x
  3. Step 3: Cross multiply
    579,965.72x = 800,351.07 × 321,881.63
  4. Step 4: Simplify right side
    579,965.72x = 257,618,306,983.84
  5. Step 5: Solve for x
    x = 257,618,306,983.84/579,965.72
  6. Step 6: Final answer
    x = 444,195.75

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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.