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Finding the Fourth Proportional to 606,138.36, 836,128.44 and 379,390.20

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Solution

The fourth proportional to 606,138.36, 836,128.44 and 379,390.20 is: 523,344.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,138.36 : 836,128.44 = 379,390.20 : x
  2. Step 2: Convert to fraction form
    606,138.36/836,128.44 = 379,390.20/x
  3. Step 3: Cross multiply
    606,138.36x = 836,128.44 × 379,390.20
  4. Step 4: Simplify right side
    606,138.36x = 317,218,936,077.29
  5. Step 5: Solve for x
    x = 317,218,936,077.29/606,138.36
  6. Step 6: Final answer
    x = 523,344.10

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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.