Home / 812,111.04-1,218,247.68-279,561.60

Finding the Fourth Proportional to 812,111.04, 1,218,247.68 and 279,561.60

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Solution

The fourth proportional to 812,111.04, 1,218,247.68 and 279,561.60 is: 419,370.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,111.04 : 1,218,247.68 = 279,561.60 : x
  2. Step 2: Convert to fraction form
    812,111.04/1,218,247.68 = 279,561.60/x
  3. Step 3: Cross multiply
    812,111.04x = 1,218,247.68 × 279,561.60
  4. Step 4: Simplify right side
    812,111.04x = 340,575,270,617.09
  5. Step 5: Solve for x
    x = 340,575,270,617.09/812,111.04
  6. Step 6: Final answer
    x = 419,370.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.