Home / 1,189,396.31-1,783,694.52-431,079.03

Finding the Fourth Proportional to 1,189,396.31, 1,783,694.52 and 431,079.03

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Solution

The fourth proportional to 1,189,396.31, 1,783,694.52 and 431,079.03 is: 646,473.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,396.31 : 1,783,694.52 = 431,079.03 : x
  2. Step 2: Convert to fraction form
    1,189,396.31/1,783,694.52 = 431,079.03/x
  3. Step 3: Cross multiply
    1,189,396.31x = 1,783,694.52 × 431,079.03
  4. Step 4: Simplify right side
    1,189,396.31x = 768,913,303,497.92
  5. Step 5: Solve for x
    x = 768,913,303,497.92/1,189,396.31
  6. Step 6: Final answer
    x = 646,473.59

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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.