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Finding the Fourth Proportional to 551,343.24, 760,850.79 and 309,636

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Solution

The fourth proportional to 551,343.24, 760,850.79 and 309,636 is: 427,296.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,343.24 : 760,850.79 = 309,636 : x
  2. Step 2: Convert to fraction form
    551,343.24/760,850.79 = 309,636/x
  3. Step 3: Cross multiply
    551,343.24x = 760,850.79 × 309,636
  4. Step 4: Simplify right side
    551,343.24x = 235,586,795,212.44
  5. Step 5: Solve for x
    x = 235,586,795,212.44/551,343.24
  6. Step 6: Final answer
    x = 427,296.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.