Home / 820,294.40-1,230,441.60-259,500.80

Finding the Fourth Proportional to 820,294.40, 1,230,441.60 and 259,500.80

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Solution

The fourth proportional to 820,294.40, 1,230,441.60 and 259,500.80 is: 389,251.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,294.40 : 1,230,441.60 = 259,500.80 : x
  2. Step 2: Convert to fraction form
    820,294.40/1,230,441.60 = 259,500.80/x
  3. Step 3: Cross multiply
    820,294.40x = 1,230,441.60 × 259,500.80
  4. Step 4: Simplify right side
    820,294.40x = 319,300,579,553.28
  5. Step 5: Solve for x
    x = 319,300,579,553.28/820,294.40
  6. Step 6: Final answer
    x = 389,251.20

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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.