Home / 690,726.45-1,036,229.80-217,301.70

Finding the Fourth Proportional to 690,726.45, 1,036,229.80 and 217,301.70

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Solution

The fourth proportional to 690,726.45, 1,036,229.80 and 217,301.70 is: 325,996.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,726.45 : 1,036,229.80 = 217,301.70 : x
  2. Step 2: Convert to fraction form
    690,726.45/1,036,229.80 = 217,301.70/x
  3. Step 3: Cross multiply
    690,726.45x = 1,036,229.80 × 217,301.70
  4. Step 4: Simplify right side
    690,726.45x = 225,174,497,130.66
  5. Step 5: Solve for x
    x = 225,174,497,130.66/690,726.45
  6. Step 6: Final answer
    x = 325,996.63

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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.