Home / 919,136.26-1,268,389.83-511,229.34

Finding the Fourth Proportional to 919,136.26, 1,268,389.83 and 511,229.34

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Solution

The fourth proportional to 919,136.26, 1,268,389.83 and 511,229.34 is: 705,486.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,136.26 : 1,268,389.83 = 511,229.34 : x
  2. Step 2: Convert to fraction form
    919,136.26/1,268,389.83 = 511,229.34/x
  3. Step 3: Cross multiply
    919,136.26x = 1,268,389.83 × 511,229.34
  4. Step 4: Simplify right side
    919,136.26x = 648,438,097,570.72
  5. Step 5: Solve for x
    x = 648,438,097,570.72/919,136.26
  6. Step 6: Final answer
    x = 705,486.36

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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.