Home / 919,389.09-1,268,739.56-511,489.66

Finding the Fourth Proportional to 919,389.09, 1,268,739.56 and 511,489.66

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Solution

The fourth proportional to 919,389.09, 1,268,739.56 and 511,489.66 is: 705,846.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,389.09 : 1,268,739.56 = 511,489.66 : x
  2. Step 2: Convert to fraction form
    919,389.09/1,268,739.56 = 511,489.66/x
  3. Step 3: Cross multiply
    919,389.09x = 1,268,739.56 × 511,489.66
  4. Step 4: Simplify right side
    919,389.09x = 648,947,166,172.95
  5. Step 5: Solve for x
    x = 648,947,166,172.95/919,389.09
  6. Step 6: Final answer
    x = 705,846.06

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1.5x scale

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.