Home / 821,629.08-1,233,458.51-389,759.45

Finding the Fourth Proportional to 821,629.08, 1,233,458.51 and 389,759.45

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Solution

The fourth proportional to 821,629.08, 1,233,458.51 and 389,759.45 is: 585,120.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,629.08 : 1,233,458.51 = 389,759.45 : x
  2. Step 2: Convert to fraction form
    821,629.08/1,233,458.51 = 389,759.45/x
  3. Step 3: Cross multiply
    821,629.08x = 1,233,458.51 × 389,759.45
  4. Step 4: Simplify right side
    821,629.08x = 480,752,102,339.33
  5. Step 5: Solve for x
    x = 480,752,102,339.33/821,629.08
  6. Step 6: Final answer
    x = 585,120.60

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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.