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Finding the Fourth Proportional to 448,991.31, 620,282.77 and 294,309.75

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Solution

The fourth proportional to 448,991.31, 620,282.77 and 294,309.75 is: 406,589.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,991.31 : 620,282.77 = 294,309.75 : x
  2. Step 2: Convert to fraction form
    448,991.31/620,282.77 = 294,309.75/x
  3. Step 3: Cross multiply
    448,991.31x = 620,282.77 × 294,309.75
  4. Step 4: Simplify right side
    448,991.31x = 182,555,266,968.01
  5. Step 5: Solve for x
    x = 182,555,266,968.01/448,991.31
  6. Step 6: Final answer
    x = 406,589.76

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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.