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Finding the Fourth Proportional to 548,672.40, 821,696.40 and 443,696.40

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Solution

The fourth proportional to 548,672.40, 821,696.40 and 443,696.40 is: 664,483.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,672.40 : 821,696.40 = 443,696.40 : x
  2. Step 2: Convert to fraction form
    548,672.40/821,696.40 = 443,696.40/x
  3. Step 3: Cross multiply
    548,672.40x = 821,696.40 × 443,696.40
  4. Step 4: Simplify right side
    548,672.40x = 364,583,734,572.96
  5. Step 5: Solve for x
    x = 364,583,734,572.96/548,672.40
  6. Step 6: Final answer
    x = 664,483.46

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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.