Home / 1,320,972.94-1,980,834.84-511,736.38

Finding the Fourth Proportional to 1,320,972.94, 1,980,834.84 and 511,736.38

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Solution

The fourth proportional to 1,320,972.94, 1,980,834.84 and 511,736.38 is: 767,362.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,972.94 : 1,980,834.84 = 511,736.38 : x
  2. Step 2: Convert to fraction form
    1,320,972.94/1,980,834.84 = 511,736.38/x
  3. Step 3: Cross multiply
    1,320,972.94x = 1,980,834.84 × 511,736.38
  4. Step 4: Simplify right side
    1,320,972.94x = 1,013,665,250,399.48
  5. Step 5: Solve for x
    x = 1,013,665,250,399.48/1,320,972.94
  6. Step 6: Final answer
    x = 767,362.62

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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.