Home / 1,278,571.80-1,916,529.30-520,087.80

Finding the Fourth Proportional to 1,278,571.80, 1,916,529.30 and 520,087.80

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Solution

The fourth proportional to 1,278,571.80, 1,916,529.30 and 520,087.80 is: 779,591.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,571.80 : 1,916,529.30 = 520,087.80 : x
  2. Step 2: Convert to fraction form
    1,278,571.80/1,916,529.30 = 520,087.80/x
  3. Step 3: Cross multiply
    1,278,571.80x = 1,916,529.30 × 520,087.80
  4. Step 4: Simplify right side
    1,278,571.80x = 996,763,507,272.54
  5. Step 5: Solve for x
    x = 996,763,507,272.54/1,278,571.80
  6. Step 6: Final answer
    x = 779,591.34

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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.