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Finding the Fourth Proportional to 816,273.56, 1,222,374 and 515,847.80

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Solution

The fourth proportional to 816,273.56, 1,222,374 and 515,847.80 is: 772,484.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,273.56 : 1,222,374 = 515,847.80 : x
  2. Step 2: Convert to fraction form
    816,273.56/1,222,374 = 515,847.80/x
  3. Step 3: Cross multiply
    816,273.56x = 1,222,374 × 515,847.80
  4. Step 4: Simplify right side
    816,273.56x = 630,558,938,677.20
  5. Step 5: Solve for x
    x = 630,558,938,677.20/816,273.56
  6. Step 6: Final answer
    x = 772,484.83

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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.