Home / 690,743.45-1,036,255.30-217,318.70

Finding the Fourth Proportional to 690,743.45, 1,036,255.30 and 217,318.70

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Solution

The fourth proportional to 690,743.45, 1,036,255.30 and 217,318.70 is: 326,022.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,743.45 : 1,036,255.30 = 217,318.70 : x
  2. Step 2: Convert to fraction form
    690,743.45/1,036,255.30 = 217,318.70/x
  3. Step 3: Cross multiply
    690,743.45x = 1,036,255.30 × 217,318.70
  4. Step 4: Simplify right side
    690,743.45x = 225,197,654,664.11
  5. Step 5: Solve for x
    x = 225,197,654,664.11/690,743.45
  6. Step 6: Final answer
    x = 326,022.14

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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.