Home / 919,725.61-1,269,229.78-511,844.64

Finding the Fourth Proportional to 919,725.61, 1,269,229.78 and 511,844.64

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Solution

The fourth proportional to 919,725.61, 1,269,229.78 and 511,844.64 is: 706,350.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,725.61 : 1,269,229.78 = 511,844.64 : x
  2. Step 2: Convert to fraction form
    919,725.61/1,269,229.78 = 511,844.64/x
  3. Step 3: Cross multiply
    919,725.61x = 1,269,229.78 × 511,844.64
  4. Step 4: Simplify right side
    919,725.61x = 649,648,464,971.14
  5. Step 5: Solve for x
    x = 649,648,464,971.14/919,725.61
  6. Step 6: Final answer
    x = 706,350.30

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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.