Home / 821,642.97-1,233,479.34-389,773.38

Finding the Fourth Proportional to 821,642.97, 1,233,479.34 and 389,773.38

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Solution

The fourth proportional to 821,642.97, 1,233,479.34 and 389,773.38 is: 585,141.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,642.97 : 1,233,479.34 = 389,773.38 : x
  2. Step 2: Convert to fraction form
    821,642.97/1,233,479.34 = 389,773.38/x
  3. Step 3: Cross multiply
    821,642.97x = 1,233,479.34 × 389,773.38
  4. Step 4: Simplify right side
    821,642.97x = 480,777,411,511.97
  5. Step 5: Solve for x
    x = 480,777,411,511.97/821,642.97
  6. Step 6: Final answer
    x = 585,141.51

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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.