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Finding the Fourth Proportional to 566,728.52, 781,879.94 and 321,571.30

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Solution

The fourth proportional to 566,728.52, 781,879.94 and 321,571.30 is: 443,651.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,728.52 : 781,879.94 = 321,571.30 : x
  2. Step 2: Convert to fraction form
    566,728.52/781,879.94 = 321,571.30/x
  3. Step 3: Cross multiply
    566,728.52x = 781,879.94 × 321,571.30
  4. Step 4: Simplify right side
    566,728.52x = 251,430,147,859.08
  5. Step 5: Solve for x
    x = 251,430,147,859.08/566,728.52
  6. Step 6: Final answer
    x = 443,651.84

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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.