Home / 820,022.36-1,229,989.80-220,973.90

Finding the Fourth Proportional to 820,022.36, 1,229,989.80 and 220,973.90

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Solution

The fourth proportional to 820,022.36, 1,229,989.80 and 220,973.90 is: 331,449.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,022.36 : 1,229,989.80 = 220,973.90 : x
  2. Step 2: Convert to fraction form
    820,022.36/1,229,989.80 = 220,973.90/x
  3. Step 3: Cross multiply
    820,022.36x = 1,229,989.80 × 220,973.90
  4. Step 4: Simplify right side
    820,022.36x = 271,795,643,066.22
  5. Step 5: Solve for x
    x = 271,795,643,066.22/820,022.36
  6. Step 6: Final answer
    x = 331,449.06

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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.