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Finding the Fourth Proportional to 490,643.10, 735,964.65 and 341,343.90

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Solution

The fourth proportional to 490,643.10, 735,964.65 and 341,343.90 is: 512,015.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,643.10 : 735,964.65 = 341,343.90 : x
  2. Step 2: Convert to fraction form
    490,643.10/735,964.65 = 341,343.90/x
  3. Step 3: Cross multiply
    490,643.10x = 735,964.65 × 341,343.90
  4. Step 4: Simplify right side
    490,643.10x = 251,217,043,893.14
  5. Step 5: Solve for x
    x = 251,217,043,893.14/490,643.10
  6. Step 6: Final answer
    x = 512,015.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.