Home / 919,621.88-1,269,078.06-511,749.96

Finding the Fourth Proportional to 919,621.88, 1,269,078.06 and 511,749.96

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Solution

The fourth proportional to 919,621.88, 1,269,078.06 and 511,749.96 is: 706,214.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,621.88 : 1,269,078.06 = 511,749.96 : x
  2. Step 2: Convert to fraction form
    919,621.88/1,269,078.06 = 511,749.96/x
  3. Step 3: Cross multiply
    919,621.88x = 1,269,078.06 × 511,749.96
  4. Step 4: Simplify right side
    919,621.88x = 649,450,646,441.88
  5. Step 5: Solve for x
    x = 649,450,646,441.88/919,621.88
  6. Step 6: Final answer
    x = 706,214.87

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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.