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Finding the Fourth Proportional to 641,841.12, 885,754.26 and 351,464.90

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Solution

The fourth proportional to 641,841.12, 885,754.26 and 351,464.90 is: 485,028.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,841.12 : 885,754.26 = 351,464.90 : x
  2. Step 2: Convert to fraction form
    641,841.12/885,754.26 = 351,464.90/x
  3. Step 3: Cross multiply
    641,841.12x = 885,754.26 × 351,464.90
  4. Step 4: Simplify right side
    641,841.12x = 311,311,532,415.47
  5. Step 5: Solve for x
    x = 311,311,532,415.47/641,841.12
  6. Step 6: Final answer
    x = 485,028.96

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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.