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Finding the Fourth Proportional to 486,369.56, 669,704.20 and 440,750.80

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Solution

The fourth proportional to 486,369.56, 669,704.20 and 440,750.80 is: 606,889.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,369.56 : 669,704.20 = 440,750.80 : x
  2. Step 2: Convert to fraction form
    486,369.56/669,704.20 = 440,750.80/x
  3. Step 3: Cross multiply
    486,369.56x = 669,704.20 × 440,750.80
  4. Step 4: Simplify right side
    486,369.56x = 295,172,664,127.84
  5. Step 5: Solve for x
    x = 295,172,664,127.84/486,369.56
  6. Step 6: Final answer
    x = 606,889.67

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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.