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Finding the Fourth Proportional to 579,467.66, 799,665.31 and 321,383.97

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Solution

The fourth proportional to 579,467.66, 799,665.31 and 321,383.97 is: 443,509.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,467.66 : 799,665.31 = 321,383.97 : x
  2. Step 2: Convert to fraction form
    579,467.66/799,665.31 = 321,383.97/x
  3. Step 3: Cross multiply
    579,467.66x = 799,665.31 × 321,383.97
  4. Step 4: Simplify right side
    579,467.66x = 256,999,612,400.81
  5. Step 5: Solve for x
    x = 256,999,612,400.81/579,467.66
  6. Step 6: Final answer
    x = 443,509.85

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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.