Home / 812,455.83-1,121,175.27-449,871.89

Finding the Fourth Proportional to 812,455.83, 1,121,175.27 and 449,871.89

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Solution

The fourth proportional to 812,455.83, 1,121,175.27 and 449,871.89 is: 620,815.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,455.83 : 1,121,175.27 = 449,871.89 : x
  2. Step 2: Convert to fraction form
    812,455.83/1,121,175.27 = 449,871.89/x
  3. Step 3: Cross multiply
    812,455.83x = 1,121,175.27 × 449,871.89
  4. Step 4: Simplify right side
    812,455.83x = 504,385,232,130.28
  5. Step 5: Solve for x
    x = 504,385,232,130.28/812,455.83
  6. Step 6: Final answer
    x = 620,815.57

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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.