Home / 812,467.13-1,121,190.95-449,883.20

Finding the Fourth Proportional to 812,467.13, 1,121,190.95 and 449,883.20

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Solution

The fourth proportional to 812,467.13, 1,121,190.95 and 449,883.20 is: 620,831.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,467.13 : 1,121,190.95 = 449,883.20 : x
  2. Step 2: Convert to fraction form
    812,467.13/1,121,190.95 = 449,883.20/x
  3. Step 3: Cross multiply
    812,467.13x = 1,121,190.95 × 449,883.20
  4. Step 4: Simplify right side
    812,467.13x = 504,404,964,541.67
  5. Step 5: Solve for x
    x = 504,404,964,541.67/812,467.13
  6. Step 6: Final answer
    x = 620,831.23

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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.