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Finding the Fourth Proportional to 548,645.90, 821,656.65 and 443,669.90

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Solution

The fourth proportional to 548,645.90, 821,656.65 and 443,669.90 is: 664,443.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,645.90 : 821,656.65 = 443,669.90 : x
  2. Step 2: Convert to fraction form
    548,645.90/821,656.65 = 443,669.90/x
  3. Step 3: Cross multiply
    548,645.90x = 821,656.65 × 443,669.90
  4. Step 4: Simplify right side
    548,645.90x = 364,544,323,739.84
  5. Step 5: Solve for x
    x = 364,544,323,739.84/548,645.90
  6. Step 6: Final answer
    x = 664,443.72

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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.