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Finding the Fourth Proportional to 548,674.40, 821,699.40 and 443,698.40

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Solution

The fourth proportional to 548,674.40, 821,699.40 and 443,698.40 is: 664,486.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,674.40 : 821,699.40 = 443,698.40 : x
  2. Step 2: Convert to fraction form
    548,674.40/821,699.40 = 443,698.40/x
  3. Step 3: Cross multiply
    548,674.40x = 821,699.40 × 443,698.40
  4. Step 4: Simplify right side
    548,674.40x = 364,586,709,060.96
  5. Step 5: Solve for x
    x = 364,586,709,060.96/548,674.40
  6. Step 6: Final answer
    x = 664,486.46

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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.