Home / 821,321.80-1,231,982.70-746,672.20

Finding the Fourth Proportional to 821,321.80, 1,231,982.70 and 746,672.20

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Solution

The fourth proportional to 821,321.80, 1,231,982.70 and 746,672.20 is: 1,120,008.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,321.80 : 1,231,982.70 = 746,672.20 : x
  2. Step 2: Convert to fraction form
    821,321.80/1,231,982.70 = 746,672.20/x
  3. Step 3: Cross multiply
    821,321.80x = 1,231,982.70 × 746,672.20
  4. Step 4: Simplify right side
    821,321.80x = 919,887,232,970.94
  5. Step 5: Solve for x
    x = 919,887,232,970.94/821,321.80
  6. Step 6: Final answer
    x = 1,120,008.30

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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.