Home / 690,731.45-1,036,237.30-217,306.70

Finding the Fourth Proportional to 690,731.45, 1,036,237.30 and 217,306.70

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Solution

The fourth proportional to 690,731.45, 1,036,237.30 and 217,306.70 is: 326,004.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,731.45 : 1,036,237.30 = 217,306.70 : x
  2. Step 2: Convert to fraction form
    690,731.45/1,036,237.30 = 217,306.70/x
  3. Step 3: Cross multiply
    690,731.45x = 1,036,237.30 × 217,306.70
  4. Step 4: Simplify right side
    690,731.45x = 225,181,308,079.91
  5. Step 5: Solve for x
    x = 225,181,308,079.91/690,731.45
  6. Step 6: Final answer
    x = 326,004.13

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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.