Home / 690,722.20-1,036,223.42-217,297.45

Finding the Fourth Proportional to 690,722.20, 1,036,223.42 and 217,297.45

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Solution

The fourth proportional to 690,722.20, 1,036,223.42 and 217,297.45 is: 325,990.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,722.20 : 1,036,223.42 = 217,297.45 : x
  2. Step 2: Convert to fraction form
    690,722.20/1,036,223.42 = 217,297.45/x
  3. Step 3: Cross multiply
    690,722.20x = 1,036,223.42 × 217,297.45
  4. Step 4: Simplify right side
    690,722.20x = 225,168,706,796.28
  5. Step 5: Solve for x
    x = 225,168,706,796.28/690,722.20
  6. Step 6: Final answer
    x = 325,990.26

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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.