Home / 1,289,972.58-1,780,183.47-709,220.26

Finding the Fourth Proportional to 1,289,972.58, 1,780,183.47 and 709,220.26

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Solution

The fourth proportional to 1,289,972.58, 1,780,183.47 and 709,220.26 is: 978,735.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,972.58 : 1,780,183.47 = 709,220.26 : x
  2. Step 2: Convert to fraction form
    1,289,972.58/1,780,183.47 = 709,220.26/x
  3. Step 3: Cross multiply
    1,289,972.58x = 1,780,183.47 × 709,220.26
  4. Step 4: Simplify right side
    1,289,972.58x = 1,262,542,183,441.10
  5. Step 5: Solve for x
    x = 1,262,542,183,441.10/1,289,972.58
  6. Step 6: Final answer
    x = 978,735.67

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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.