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Finding the Fourth Proportional to 508,716.45, 702,101.31 and 304,775.88

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Solution

The fourth proportional to 508,716.45, 702,101.31 and 304,775.88 is: 420,634.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,716.45 : 702,101.31 = 304,775.88 : x
  2. Step 2: Convert to fraction form
    508,716.45/702,101.31 = 304,775.88/x
  3. Step 3: Cross multiply
    508,716.45x = 702,101.31 × 304,775.88
  4. Step 4: Simplify right side
    508,716.45x = 213,983,544,604.40
  5. Step 5: Solve for x
    x = 213,983,544,604.40/508,716.45
  6. Step 6: Final answer
    x = 420,634.22

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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.