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Finding the Fourth Proportional to 413,470.20, 620,378.10 and 133,073.40

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Solution

The fourth proportional to 413,470.20, 620,378.10 and 133,073.40 is: 199,665.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,470.20 : 620,378.10 = 133,073.40 : x
  2. Step 2: Convert to fraction form
    413,470.20/620,378.10 = 133,073.40/x
  3. Step 3: Cross multiply
    413,470.20x = 620,378.10 × 133,073.40
  4. Step 4: Simplify right side
    413,470.20x = 82,555,823,052.54
  5. Step 5: Solve for x
    x = 82,555,823,052.54/413,470.20
  6. Step 6: Final answer
    x = 199,665.71

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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.