Home / 812,309.91-1,120,996.53-449,740.24

Finding the Fourth Proportional to 812,309.91, 1,120,996.53 and 449,740.24

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Solution

The fourth proportional to 812,309.91, 1,120,996.53 and 449,740.24 is: 620,646.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,309.91 : 1,120,996.53 = 449,740.24 : x
  2. Step 2: Convert to fraction form
    812,309.91/1,120,996.53 = 449,740.24/x
  3. Step 3: Cross multiply
    812,309.91x = 1,120,996.53 × 449,740.24
  4. Step 4: Simplify right side
    812,309.91x = 504,157,248,441.37
  5. Step 5: Solve for x
    x = 504,157,248,441.37/812,309.91
  6. Step 6: Final answer
    x = 620,646.43

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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.