Home / 1,212,999.30-1,819,243.80-613,396.80

Finding the Fourth Proportional to 1,212,999.30, 1,819,243.80 and 613,396.80

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Solution

The fourth proportional to 1,212,999.30, 1,819,243.80 and 613,396.80 is: 919,966.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,999.30 : 1,819,243.80 = 613,396.80 : x
  2. Step 2: Convert to fraction form
    1,212,999.30/1,819,243.80 = 613,396.80/x
  3. Step 3: Cross multiply
    1,212,999.30x = 1,819,243.80 × 613,396.80
  4. Step 4: Simplify right side
    1,212,999.30x = 1,115,918,325,339.84
  5. Step 5: Solve for x
    x = 1,115,918,325,339.84/1,212,999.30
  6. Step 6: Final answer
    x = 919,966.17

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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.