Home / 839,359.82-1,257,986.31-661,163.06

Finding the Fourth Proportional to 839,359.82, 1,257,986.31 and 661,163.06

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Solution

The fourth proportional to 839,359.82, 1,257,986.31 and 661,163.06 is: 990,914.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,359.82 : 1,257,986.31 = 661,163.06 : x
  2. Step 2: Convert to fraction form
    839,359.82/1,257,986.31 = 661,163.06/x
  3. Step 3: Cross multiply
    839,359.82x = 1,257,986.31 × 661,163.06
  4. Step 4: Simplify right side
    839,359.82x = 831,734,078,157.71
  5. Step 5: Solve for x
    x = 831,734,078,157.71/839,359.82
  6. Step 6: Final answer
    x = 990,914.81

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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.