Home / 1,620,824.88-2,431,281.07-422,720.67

Finding the Fourth Proportional to 1,620,824.88, 2,431,281.07 and 422,720.67

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Solution

The fourth proportional to 1,620,824.88, 2,431,281.07 and 422,720.67 is: 634,092.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620,824.88 : 2,431,281.07 = 422,720.67 : x
  2. Step 2: Convert to fraction form
    1,620,824.88/2,431,281.07 = 422,720.67/x
  3. Step 3: Cross multiply
    1,620,824.88x = 2,431,281.07 × 422,720.67
  4. Step 4: Simplify right side
    1,620,824.88x = 1,027,752,770,136.62
  5. Step 5: Solve for x
    x = 1,027,752,770,136.62/1,620,824.88
  6. Step 6: Final answer
    x = 634,092.42

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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.