Home / 521,845.33-720,134.37-306,999.23

Finding the Fourth Proportional to 521,845.33, 720,134.37 and 306,999.23

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Solution

The fourth proportional to 521,845.33, 720,134.37 and 306,999.23 is: 423,651.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,845.33 : 720,134.37 = 306,999.23 : x
  2. Step 2: Convert to fraction form
    521,845.33/720,134.37 = 306,999.23/x
  3. Step 3: Cross multiply
    521,845.33x = 720,134.37 × 306,999.23
  4. Step 4: Simplify right side
    521,845.33x = 221,080,697,086.54
  5. Step 5: Solve for x
    x = 221,080,697,086.54/521,845.33
  6. Step 6: Final answer
    x = 423,651.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.