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Finding the Fourth Proportional to 630,991.90, 946,687.02 and 479,912.67

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Solution

The fourth proportional to 630,991.90, 946,687.02 and 479,912.67 is: 720,020.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,991.90 : 946,687.02 = 479,912.67 : x
  2. Step 2: Convert to fraction form
    630,991.90/946,687.02 = 479,912.67/x
  3. Step 3: Cross multiply
    630,991.90x = 946,687.02 × 479,912.67
  4. Step 4: Simplify right side
    630,991.90x = 454,327,093,622.87
  5. Step 5: Solve for x
    x = 454,327,093,622.87/630,991.90
  6. Step 6: Final answer
    x = 720,020.48

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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.