Home / 820,137.20-1,230,205.80-654,249.20

Finding the Fourth Proportional to 820,137.20, 1,230,205.80 and 654,249.20

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Solution

The fourth proportional to 820,137.20, 1,230,205.80 and 654,249.20 is: 981,373.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,137.20 : 1,230,205.80 = 654,249.20 : x
  2. Step 2: Convert to fraction form
    820,137.20/1,230,205.80 = 654,249.20/x
  3. Step 3: Cross multiply
    820,137.20x = 1,230,205.80 × 654,249.20
  4. Step 4: Simplify right side
    820,137.20x = 804,861,160,485.36
  5. Step 5: Solve for x
    x = 804,861,160,485.36/820,137.20
  6. Step 6: Final answer
    x = 981,373.80

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1.5x scale

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.