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Finding the Fourth Proportional to 475,890.50, 656,728.90 and 274,686.50

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Solution

The fourth proportional to 475,890.50, 656,728.90 and 274,686.50 is: 379,067.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,890.50 : 656,728.90 = 274,686.50 : x
  2. Step 2: Convert to fraction form
    475,890.50/656,728.90 = 274,686.50/x
  3. Step 3: Cross multiply
    475,890.50x = 656,728.90 × 274,686.50
  4. Step 4: Simplify right side
    475,890.50x = 180,394,562,989.85
  5. Step 5: Solve for x
    x = 180,394,562,989.85/475,890.50
  6. Step 6: Final answer
    x = 379,067.38

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1.5x scale

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.