Home / 1,188,921.62-1,783,517.16-431,119.64

Finding the Fourth Proportional to 1,188,921.62, 1,783,517.16 and 431,119.64

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Solution

The fourth proportional to 1,188,921.62, 1,783,517.16 and 431,119.64 is: 646,728.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,921.62 : 1,783,517.16 = 431,119.64 : x
  2. Step 2: Convert to fraction form
    1,188,921.62/1,783,517.16 = 431,119.64/x
  3. Step 3: Cross multiply
    1,188,921.62x = 1,783,517.16 × 431,119.64
  4. Step 4: Simplify right side
    1,188,921.62x = 768,909,275,953.02
  5. Step 5: Solve for x
    x = 768,909,275,953.02/1,188,921.62
  6. Step 6: Final answer
    x = 646,728.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.