Home / 919,129.14-1,268,380.02-511,222.20

Finding the Fourth Proportional to 919,129.14, 1,268,380.02 and 511,222.20

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Solution

The fourth proportional to 919,129.14, 1,268,380.02 and 511,222.20 is: 705,476.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,129.14 : 1,268,380.02 = 511,222.20 : x
  2. Step 2: Convert to fraction form
    919,129.14/1,268,380.02 = 511,222.20/x
  3. Step 3: Cross multiply
    919,129.14x = 1,268,380.02 × 511,222.20
  4. Step 4: Simplify right side
    919,129.14x = 648,424,024,260.44
  5. Step 5: Solve for x
    x = 648,424,024,260.44/919,129.14
  6. Step 6: Final answer
    x = 705,476.52

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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.