Home / 1,212,112.40-1,820,136.90-814,515.80

Finding the Fourth Proportional to 1,212,112.40, 1,820,136.90 and 814,515.80

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Solution

The fourth proportional to 1,212,112.40, 1,820,136.90 and 814,515.80 is: 1,223,096.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,112.40 : 1,820,136.90 = 814,515.80 : x
  2. Step 2: Convert to fraction form
    1,212,112.40/1,820,136.90 = 814,515.80/x
  3. Step 3: Cross multiply
    1,212,112.40x = 1,820,136.90 × 814,515.80
  4. Step 4: Simplify right side
    1,212,112.40x = 1,482,530,263,213.02
  5. Step 5: Solve for x
    x = 1,482,530,263,213.02/1,212,112.40
  6. Step 6: Final answer
    x = 1,223,096.36

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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.