Home / 821,629.58-1,233,459.26-389,759.95

Finding the Fourth Proportional to 821,629.58, 1,233,459.26 and 389,759.95

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Solution

The fourth proportional to 821,629.58, 1,233,459.26 and 389,759.95 is: 585,121.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,629.58 : 1,233,459.26 = 389,759.95 : x
  2. Step 2: Convert to fraction form
    821,629.58/1,233,459.26 = 389,759.95/x
  3. Step 3: Cross multiply
    821,629.58x = 1,233,459.26 × 389,759.95
  4. Step 4: Simplify right side
    821,629.58x = 480,753,011,388.54
  5. Step 5: Solve for x
    x = 480,753,011,388.54/821,629.58
  6. Step 6: Final answer
    x = 585,121.35

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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.