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Finding the Fourth Proportional to 484,650.72, 669,147.21 and 303,435.90

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Solution

The fourth proportional to 484,650.72, 669,147.21 and 303,435.90 is: 418,947.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,650.72 : 669,147.21 = 303,435.90 : x
  2. Step 2: Convert to fraction form
    484,650.72/669,147.21 = 303,435.90/x
  3. Step 3: Cross multiply
    484,650.72x = 669,147.21 × 303,435.90
  4. Step 4: Simplify right side
    484,650.72x = 203,043,285,898.84
  5. Step 5: Solve for x
    x = 203,043,285,898.84/484,650.72
  6. Step 6: Final answer
    x = 418,947.66

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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.