Home / 820,162.80-1,230,244.20-687,193.20

Finding the Fourth Proportional to 820,162.80, 1,230,244.20 and 687,193.20

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Solution

The fourth proportional to 820,162.80, 1,230,244.20 and 687,193.20 is: 1,030,789.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,162.80 : 1,230,244.20 = 687,193.20 : x
  2. Step 2: Convert to fraction form
    820,162.80/1,230,244.20 = 687,193.20/x
  3. Step 3: Cross multiply
    820,162.80x = 1,230,244.20 × 687,193.20
  4. Step 4: Simplify right side
    820,162.80x = 845,415,448,579.44
  5. Step 5: Solve for x
    x = 845,415,448,579.44/820,162.80
  6. Step 6: Final answer
    x = 1,030,789.80

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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.