Home / 1,138,702-1,571,272.68-629,335.12

Finding the Fourth Proportional to 1,138,702, 1,571,272.68 and 629,335.12

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Solution

The fourth proportional to 1,138,702, 1,571,272.68 and 629,335.12 is: 868,407.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,702 : 1,571,272.68 = 629,335.12 : x
  2. Step 2: Convert to fraction form
    1,138,702/1,571,272.68 = 629,335.12/x
  3. Step 3: Cross multiply
    1,138,702x = 1,571,272.68 × 629,335.12
  4. Step 4: Simplify right side
    1,138,702x = 988,857,080,620.52
  5. Step 5: Solve for x
    x = 988,857,080,620.52/1,138,702
  6. Step 6: Final answer
    x = 868,407.26

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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.