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Finding the Fourth Proportional to 611,995.12, 844,311.26 and 353,824.64

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Solution

The fourth proportional to 611,995.12, 844,311.26 and 353,824.64 is: 488,138.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,995.12 : 844,311.26 = 353,824.64 : x
  2. Step 2: Convert to fraction form
    611,995.12/844,311.26 = 353,824.64/x
  3. Step 3: Cross multiply
    611,995.12x = 844,311.26 × 353,824.64
  4. Step 4: Simplify right side
    611,995.12x = 298,738,127,617.45
  5. Step 5: Solve for x
    x = 298,738,127,617.45/611,995.12
  6. Step 6: Final answer
    x = 488,138.09

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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.