Home / 809,786.70-1,212,930.45-669,818.70

Finding the Fourth Proportional to 809,786.70, 1,212,930.45 and 669,818.70

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Solution

The fourth proportional to 809,786.70, 1,212,930.45 and 669,818.70 is: 1,003,280.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,786.70 : 1,212,930.45 = 669,818.70 : x
  2. Step 2: Convert to fraction form
    809,786.70/1,212,930.45 = 669,818.70/x
  3. Step 3: Cross multiply
    809,786.70x = 1,212,930.45 × 669,818.70
  4. Step 4: Simplify right side
    809,786.70x = 812,443,497,209.42
  5. Step 5: Solve for x
    x = 812,443,497,209.42/809,786.70
  6. Step 6: Final answer
    x = 1,003,280.86

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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.