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Finding the Fourth Proportional to 863,959.80, 1,294,889.04 and 611,313.09

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Solution

The fourth proportional to 863,959.80, 1,294,889.04 and 611,313.09 is: 916,226.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,959.80 : 1,294,889.04 = 611,313.09 : x
  2. Step 2: Convert to fraction form
    863,959.80/1,294,889.04 = 611,313.09/x
  3. Step 3: Cross multiply
    863,959.80x = 1,294,889.04 × 611,313.09
  4. Step 4: Simplify right side
    863,959.80x = 791,582,620,249.53
  5. Step 5: Solve for x
    x = 791,582,620,249.53/863,959.80
  6. Step 6: Final answer
    x = 916,226.22

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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.