Home / 690,729.20-1,036,233.92-217,304.45

Finding the Fourth Proportional to 690,729.20, 1,036,233.92 and 217,304.45

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Solution

The fourth proportional to 690,729.20, 1,036,233.92 and 217,304.45 is: 326,000.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,729.20 : 1,036,233.92 = 217,304.45 : x
  2. Step 2: Convert to fraction form
    690,729.20/1,036,233.92 = 217,304.45/x
  3. Step 3: Cross multiply
    690,729.20x = 1,036,233.92 × 217,304.45
  4. Step 4: Simplify right side
    690,729.20x = 225,178,242,056.94
  5. Step 5: Solve for x
    x = 225,178,242,056.94/690,729.20
  6. Step 6: Final answer
    x = 326,000.76

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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.