Home / 812,481.13-1,121,210.16-449,897.20

Finding the Fourth Proportional to 812,481.13, 1,121,210.16 and 449,897.20

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Solution

The fourth proportional to 812,481.13, 1,121,210.16 and 449,897.20 is: 620,850.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,481.13 : 1,121,210.16 = 449,897.20 : x
  2. Step 2: Convert to fraction form
    812,481.13/1,121,210.16 = 449,897.20/x
  3. Step 3: Cross multiply
    812,481.13x = 1,121,210.16 × 449,897.20
  4. Step 4: Simplify right side
    812,481.13x = 504,429,311,595.55
  5. Step 5: Solve for x
    x = 504,429,311,595.55/812,481.13
  6. Step 6: Final answer
    x = 620,850.49

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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.