Home / 919,974.05-1,269,578.56-512,080.33

Finding the Fourth Proportional to 919,974.05, 1,269,578.56 and 512,080.33

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Solution

The fourth proportional to 919,974.05, 1,269,578.56 and 512,080.33 is: 706,678.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,974.05 : 1,269,578.56 = 512,080.33 : x
  2. Step 2: Convert to fraction form
    919,974.05/1,269,578.56 = 512,080.33/x
  3. Step 3: Cross multiply
    919,974.05x = 1,269,578.56 × 512,080.33
  4. Step 4: Simplify right side
    919,974.05x = 650,126,203,511.58
  5. Step 5: Solve for x
    x = 650,126,203,511.58/919,974.05
  6. Step 6: Final answer
    x = 706,678.85

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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.