Home / 812,475.11-1,121,214.96-449,898.95

Finding the Fourth Proportional to 812,475.11, 1,121,214.96 and 449,898.95

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Solution

The fourth proportional to 812,475.11, 1,121,214.96 and 449,898.95 is: 620,860.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,475.11 : 1,121,214.96 = 449,898.95 : x
  2. Step 2: Convert to fraction form
    812,475.11/1,121,214.96 = 449,898.95/x
  3. Step 3: Cross multiply
    812,475.11x = 1,121,214.96 × 449,898.95
  4. Step 4: Simplify right side
    812,475.11x = 504,433,436,031.33
  5. Step 5: Solve for x
    x = 504,433,436,031.33/812,475.11
  6. Step 6: Final answer
    x = 620,860.17

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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.