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Finding the Fourth Proportional to 552,835.20, 830,127.60 and 419,865.60

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Solution

The fourth proportional to 552,835.20, 830,127.60 and 419,865.60 is: 630,462.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,835.20 : 830,127.60 = 419,865.60 : x
  2. Step 2: Convert to fraction form
    552,835.20/830,127.60 = 419,865.60/x
  3. Step 3: Cross multiply
    552,835.20x = 830,127.60 × 419,865.60
  4. Step 4: Simplify right side
    552,835.20x = 348,542,022,850.56
  5. Step 5: Solve for x
    x = 348,542,022,850.56/552,835.20
  6. Step 6: Final answer
    x = 630,462.79

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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.