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Finding the Fourth Proportional to 548,909.85, 757,960.58 and 345,026.43

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Solution

The fourth proportional to 548,909.85, 757,960.58 and 345,026.43 is: 476,428.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,909.85 : 757,960.58 = 345,026.43 : x
  2. Step 2: Convert to fraction form
    548,909.85/757,960.58 = 345,026.43/x
  3. Step 3: Cross multiply
    548,909.85x = 757,960.58 × 345,026.43
  4. Step 4: Simplify right side
    548,909.85x = 261,516,432,998.13
  5. Step 5: Solve for x
    x = 261,516,432,998.13/548,909.85
  6. Step 6: Final answer
    x = 476,428.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.