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Finding the Fourth Proportional to 505,456.80, 759,311.60 and 422,512.80

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Solution

The fourth proportional to 505,456.80, 759,311.60 and 422,512.80 is: 634,710.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,456.80 : 759,311.60 = 422,512.80 : x
  2. Step 2: Convert to fraction form
    505,456.80/759,311.60 = 422,512.80/x
  3. Step 3: Cross multiply
    505,456.80x = 759,311.60 × 422,512.80
  4. Step 4: Simplify right side
    505,456.80x = 320,818,870,188.48
  5. Step 5: Solve for x
    x = 320,818,870,188.48/505,456.80
  6. Step 6: Final answer
    x = 634,710.76

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