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Finding the Fourth Proportional to 811,954.98, 1,120,500 and 449,403.84

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Solution

The fourth proportional to 811,954.98, 1,120,500 and 449,403.84 is: 620,178.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,954.98 : 1,120,500 = 449,403.84 : x
  2. Step 2: Convert to fraction form
    811,954.98/1,120,500 = 449,403.84/x
  3. Step 3: Cross multiply
    811,954.98x = 1,120,500 × 449,403.84
  4. Step 4: Simplify right side
    811,954.98x = 503,557,002,720
  5. Step 5: Solve for x
    x = 503,557,002,720/811,954.98
  6. Step 6: Final answer
    x = 620,178.48

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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.