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Finding the Fourth Proportional to 551,366.40, 825,956.10 and 485,610.60

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Solution

The fourth proportional to 551,366.40, 825,956.10 and 485,610.60 is: 727,452.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,366.40 : 825,956.10 = 485,610.60 : x
  2. Step 2: Convert to fraction form
    551,366.40/825,956.10 = 485,610.60/x
  3. Step 3: Cross multiply
    551,366.40x = 825,956.10 × 485,610.60
  4. Step 4: Simplify right side
    551,366.40x = 401,093,037,294.66
  5. Step 5: Solve for x
    x = 401,093,037,294.66/551,366.40
  6. Step 6: Final answer
    x = 727,452.81

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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.