Home / 812,078.64-1,218,081.96-213,026.16

Finding the Fourth Proportional to 812,078.64, 1,218,081.96 and 213,026.16

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Solution

The fourth proportional to 812,078.64, 1,218,081.96 and 213,026.16 is: 319,529.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,078.64 : 1,218,081.96 = 213,026.16 : x
  2. Step 2: Convert to fraction form
    812,078.64/1,218,081.96 = 213,026.16/x
  3. Step 3: Cross multiply
    812,078.64x = 1,218,081.96 × 213,026.16
  4. Step 4: Simplify right side
    812,078.64x = 259,483,322,504.07
  5. Step 5: Solve for x
    x = 259,483,322,504.07/812,078.64
  6. Step 6: Final answer
    x = 319,529.80

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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.