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Finding the Fourth Proportional to 862,679.60, 1,294,019.40 and 823,972.40

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Solution

The fourth proportional to 862,679.60, 1,294,019.40 and 823,972.40 is: 1,235,958.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,679.60 : 1,294,019.40 = 823,972.40 : x
  2. Step 2: Convert to fraction form
    862,679.60/1,294,019.40 = 823,972.40/x
  3. Step 3: Cross multiply
    862,679.60x = 1,294,019.40 × 823,972.40
  4. Step 4: Simplify right side
    862,679.60x = 1,066,236,270,664.56
  5. Step 5: Solve for x
    x = 1,066,236,270,664.56/862,679.60
  6. Step 6: Final answer
    x = 1,235,958.60

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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.