Home / 1,281,729.53-1,923,749.90-683,189.21

Finding the Fourth Proportional to 1,281,729.53, 1,923,749.90 and 683,189.21

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Solution

The fourth proportional to 1,281,729.53, 1,923,749.90 and 683,189.21 is: 1,025,399.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,729.53 : 1,923,749.90 = 683,189.21 : x
  2. Step 2: Convert to fraction form
    1,281,729.53/1,923,749.90 = 683,189.21/x
  3. Step 3: Cross multiply
    1,281,729.53x = 1,923,749.90 × 683,189.21
  4. Step 4: Simplify right side
    1,281,729.53x = 1,314,285,174,418.58
  5. Step 5: Solve for x
    x = 1,314,285,174,418.58/1,281,729.53
  6. Step 6: Final answer
    x = 1,025,399.78

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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.