Home / 1,189,333.88-1,642,643.07-783,250.81

Finding the Fourth Proportional to 1,189,333.88, 1,642,643.07 and 783,250.81

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Solution

The fourth proportional to 1,189,333.88, 1,642,643.07 and 783,250.81 is: 1,081,783.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,333.88 : 1,642,643.07 = 783,250.81 : x
  2. Step 2: Convert to fraction form
    1,189,333.88/1,642,643.07 = 783,250.81/x
  3. Step 3: Cross multiply
    1,189,333.88x = 1,642,643.07 × 783,250.81
  4. Step 4: Simplify right side
    1,189,333.88x = 1,286,601,511,011.78
  5. Step 5: Solve for x
    x = 1,286,601,511,011.78/1,189,333.88
  6. Step 6: Final answer
    x = 1,081,783.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.