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Finding the Fourth Proportional to 579,617.78, 799,832.47 and 321,470.37

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Solution

The fourth proportional to 579,617.78, 799,832.47 and 321,470.37 is: 443,606.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,617.78 : 799,832.47 = 321,470.37 : x
  2. Step 2: Convert to fraction form
    579,617.78/799,832.47 = 321,470.37/x
  3. Step 3: Cross multiply
    579,617.78x = 799,832.47 × 321,470.37
  4. Step 4: Simplify right side
    579,617.78x = 257,122,438,461.56
  5. Step 5: Solve for x
    x = 257,122,438,461.56/579,617.78
  6. Step 6: Final answer
    x = 443,606.89

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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.