Home / 418,982.03-628,474.34-103,438.97

Finding the Fourth Proportional to 418,982.03, 628,474.34 and 103,438.97

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Solution

The fourth proportional to 418,982.03, 628,474.34 and 103,438.97 is: 155,158.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,982.03 : 628,474.34 = 103,438.97 : x
  2. Step 2: Convert to fraction form
    418,982.03/628,474.34 = 103,438.97/x
  3. Step 3: Cross multiply
    418,982.03x = 628,474.34 × 103,438.97
  4. Step 4: Simplify right side
    418,982.03x = 65,008,738,401.03
  5. Step 5: Solve for x
    x = 65,008,738,401.03/418,982.03
  6. Step 6: Final answer
    x = 155,158.77

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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.