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Finding the Fourth Proportional to 519,967.89, 779,796.86 and 220,443.66

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Solution

The fourth proportional to 519,967.89, 779,796.86 and 220,443.66 is: 330,599.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,967.89 : 779,796.86 = 220,443.66 : x
  2. Step 2: Convert to fraction form
    519,967.89/779,796.86 = 220,443.66/x
  3. Step 3: Cross multiply
    519,967.89x = 779,796.86 × 220,443.66
  4. Step 4: Simplify right side
    519,967.89x = 171,901,272,772.69
  5. Step 5: Solve for x
    x = 171,901,272,772.69/519,967.89
  6. Step 6: Final answer
    x = 330,599.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.