Home / 591,121.40-885,369.90-486,145.40

Finding the Fourth Proportional to 591,121.40, 885,369.90 and 486,145.40

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Solution

The fourth proportional to 591,121.40, 885,369.90 and 486,145.40 is: 728,138.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,121.40 : 885,369.90 = 486,145.40 : x
  2. Step 2: Convert to fraction form
    591,121.40/885,369.90 = 486,145.40/x
  3. Step 3: Cross multiply
    591,121.40x = 885,369.90 × 486,145.40
  4. Step 4: Simplify right side
    591,121.40x = 430,418,504,183.46
  5. Step 5: Solve for x
    x = 430,418,504,183.46/591,121.40
  6. Step 6: Final answer
    x = 728,138.93

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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.