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Finding the Fourth Proportional to 548,646.90, 821,658.15 and 443,670.90

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Solution

The fourth proportional to 548,646.90, 821,658.15 and 443,670.90 is: 664,445.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,646.90 : 821,658.15 = 443,670.90 : x
  2. Step 2: Convert to fraction form
    548,646.90/821,658.15 = 443,670.90/x
  3. Step 3: Cross multiply
    548,646.90x = 821,658.15 × 443,670.90
  4. Step 4: Simplify right side
    548,646.90x = 364,545,810,902.84
  5. Step 5: Solve for x
    x = 364,545,810,902.84/548,646.90
  6. Step 6: Final answer
    x = 664,445.22

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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.