Home / 812,448.57-1,121,165.32-449,864.62

Finding the Fourth Proportional to 812,448.57, 1,121,165.32 and 449,864.62

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Solution

The fourth proportional to 812,448.57, 1,121,165.32 and 449,864.62 is: 620,805.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,448.57 : 1,121,165.32 = 449,864.62 : x
  2. Step 2: Convert to fraction form
    812,448.57/1,121,165.32 = 449,864.62/x
  3. Step 3: Cross multiply
    812,448.57x = 1,121,165.32 × 449,864.62
  4. Step 4: Simplify right side
    812,448.57x = 504,372,610,638.98
  5. Step 5: Solve for x
    x = 504,372,610,638.98/812,448.57
  6. Step 6: Final answer
    x = 620,805.59

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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.