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Finding the Fourth Proportional to 443,628.30, 664,458.30 and 384,579.30

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Solution

The fourth proportional to 443,628.30, 664,458.30 and 384,579.30 is: 576,015.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,628.30 : 664,458.30 = 384,579.30 : x
  2. Step 2: Convert to fraction form
    443,628.30/664,458.30 = 384,579.30/x
  3. Step 3: Cross multiply
    443,628.30x = 664,458.30 × 384,579.30
  4. Step 4: Simplify right side
    443,628.30x = 255,536,907,893.19
  5. Step 5: Solve for x
    x = 255,536,907,893.19/443,628.30
  6. Step 6: Final answer
    x = 576,015.79

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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.