Home / 820,614.60-1,230,806.70-259,705.80

Finding the Fourth Proportional to 820,614.60, 1,230,806.70 and 259,705.80

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Solution

The fourth proportional to 820,614.60, 1,230,806.70 and 259,705.80 is: 389,522.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,614.60 : 1,230,806.70 = 259,705.80 : x
  2. Step 2: Convert to fraction form
    820,614.60/1,230,806.70 = 259,705.80/x
  3. Step 3: Cross multiply
    820,614.60x = 1,230,806.70 × 259,705.80
  4. Step 4: Simplify right side
    820,614.60x = 319,647,638,668.86
  5. Step 5: Solve for x
    x = 319,647,638,668.86/820,614.60
  6. Step 6: Final answer
    x = 389,522.24

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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.