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Finding the Fourth Proportional to 654,245.55, 979,793.64 and 443,243.79

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Solution

The fourth proportional to 654,245.55, 979,793.64 and 443,243.79 is: 663,798.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,245.55 : 979,793.64 = 443,243.79 : x
  2. Step 2: Convert to fraction form
    654,245.55/979,793.64 = 443,243.79/x
  3. Step 3: Cross multiply
    654,245.55x = 979,793.64 × 443,243.79
  4. Step 4: Simplify right side
    654,245.55x = 434,287,446,411.50
  5. Step 5: Solve for x
    x = 434,287,446,411.50/654,245.55
  6. Step 6: Final answer
    x = 663,798.85

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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.