Home / 919,579.71-1,269,019.99-511,707.81

Finding the Fourth Proportional to 919,579.71, 1,269,019.99 and 511,707.81

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Solution

The fourth proportional to 919,579.71, 1,269,019.99 and 511,707.81 is: 706,156.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,579.71 : 1,269,019.99 = 511,707.81 : x
  2. Step 2: Convert to fraction form
    919,579.71/1,269,019.99 = 511,707.81/x
  3. Step 3: Cross multiply
    919,579.71x = 1,269,019.99 × 511,707.81
  4. Step 4: Simplify right side
    919,579.71x = 649,367,433,181.05
  5. Step 5: Solve for x
    x = 649,367,433,181.05/919,579.71
  6. Step 6: Final answer
    x = 706,156.76

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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.