Home / 1,420,880.70-2,131,321.05-859,626.30

Finding the Fourth Proportional to 1,420,880.70, 2,131,321.05 and 859,626.30

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Solution

The fourth proportional to 1,420,880.70, 2,131,321.05 and 859,626.30 is: 1,289,439.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,880.70 : 2,131,321.05 = 859,626.30 : x
  2. Step 2: Convert to fraction form
    1,420,880.70/2,131,321.05 = 859,626.30/x
  3. Step 3: Cross multiply
    1,420,880.70x = 2,131,321.05 × 859,626.30
  4. Step 4: Simplify right side
    1,420,880.70x = 1,832,139,628,323.62
  5. Step 5: Solve for x
    x = 1,832,139,628,323.62/1,420,880.70
  6. Step 6: Final answer
    x = 1,289,439.45

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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.