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Finding the Fourth Proportional to 520,799.01, 718,696.17 and 305,958.66

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Solution

The fourth proportional to 520,799.01, 718,696.17 and 305,958.66 is: 422,219.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,799.01 : 718,696.17 = 305,958.66 : x
  2. Step 2: Convert to fraction form
    520,799.01/718,696.17 = 305,958.66/x
  3. Step 3: Cross multiply
    520,799.01x = 718,696.17 × 305,958.66
  4. Step 4: Simplify right side
    520,799.01x = 219,891,317,120.33
  5. Step 5: Solve for x
    x = 219,891,317,120.33/520,799.01
  6. Step 6: Final answer
    x = 422,219.15

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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.