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Finding the Fourth Proportional to 641,843.12, 885,757.02 and 351,466.92

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Solution

The fourth proportional to 641,843.12, 885,757.02 and 351,466.92 is: 485,031.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,843.12 : 885,757.02 = 351,466.92 : x
  2. Step 2: Convert to fraction form
    641,843.12/885,757.02 = 351,466.92/x
  3. Step 3: Cross multiply
    641,843.12x = 885,757.02 × 351,466.92
  4. Step 4: Simplify right side
    641,843.12x = 311,314,291,687.78
  5. Step 5: Solve for x
    x = 311,314,291,687.78/641,843.12
  6. Step 6: Final answer
    x = 485,031.75

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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.