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Finding the Fourth Proportional to 863,596.80, 1,294,228.80 and 763,286.40

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Solution

The fourth proportional to 863,596.80, 1,294,228.80 and 763,286.40 is: 1,143,898.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,596.80 : 1,294,228.80 = 763,286.40 : x
  2. Step 2: Convert to fraction form
    863,596.80/1,294,228.80 = 763,286.40/x
  3. Step 3: Cross multiply
    863,596.80x = 1,294,228.80 × 763,286.40
  4. Step 4: Simplify right side
    863,596.80x = 987,867,241,528.32
  5. Step 5: Solve for x
    x = 987,867,241,528.32/863,596.80
  6. Step 6: Final answer
    x = 1,143,898.68

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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.