Home / 1,392,190.70-2,084,138.85-830,936.30

Finding the Fourth Proportional to 1,392,190.70, 2,084,138.85 and 830,936.30

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Solution

The fourth proportional to 1,392,190.70, 2,084,138.85 and 830,936.30 is: 1,243,929.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392,190.70 : 2,084,138.85 = 830,936.30 : x
  2. Step 2: Convert to fraction form
    1,392,190.70/2,084,138.85 = 830,936.30/x
  3. Step 3: Cross multiply
    1,392,190.70x = 2,084,138.85 × 830,936.30
  4. Step 4: Simplify right side
    1,392,190.70x = 1,731,786,624,705.26
  5. Step 5: Solve for x
    x = 1,731,786,624,705.26/1,392,190.70
  6. Step 6: Final answer
    x = 1,243,929.17

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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.