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Finding the Fourth Proportional to 505,961.40, 758,504.70 and 306,069.60

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Solution

The fourth proportional to 505,961.40, 758,504.70 and 306,069.60 is: 458,839.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,961.40 : 758,504.70 = 306,069.60 : x
  2. Step 2: Convert to fraction form
    505,961.40/758,504.70 = 306,069.60/x
  3. Step 3: Cross multiply
    505,961.40x = 758,504.70 × 306,069.60
  4. Step 4: Simplify right side
    505,961.40x = 232,155,230,127.12
  5. Step 5: Solve for x
    x = 232,155,230,127.12/505,961.40
  6. Step 6: Final answer
    x = 458,839.81

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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.