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Finding the Fourth Proportional to 621,508.22, 857,757.42 and 349,587.57

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Solution

The fourth proportional to 621,508.22, 857,757.42 and 349,587.57 is: 482,473.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,508.22 : 857,757.42 = 349,587.57 : x
  2. Step 2: Convert to fraction form
    621,508.22/857,757.42 = 349,587.57/x
  3. Step 3: Cross multiply
    621,508.22x = 857,757.42 × 349,587.57
  4. Step 4: Simplify right side
    621,508.22x = 299,861,332,107.27
  5. Step 5: Solve for x
    x = 299,861,332,107.27/621,508.22
  6. Step 6: Final answer
    x = 482,473.64

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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.