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Finding the Fourth Proportional to 720,033.26, 993,626.65 and 397,736.42

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Solution

The fourth proportional to 720,033.26, 993,626.65 and 397,736.42 is: 548,865.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,033.26 : 993,626.65 = 397,736.42 : x
  2. Step 2: Convert to fraction form
    720,033.26/993,626.65 = 397,736.42/x
  3. Step 3: Cross multiply
    720,033.26x = 993,626.65 × 397,736.42
  4. Step 4: Simplify right side
    720,033.26x = 395,201,508,077.32
  5. Step 5: Solve for x
    x = 395,201,508,077.32/720,033.26
  6. Step 6: Final answer
    x = 548,865.63

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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.