Home / 1,131,278.98-1,561,072.66-666,059.43

Finding the Fourth Proportional to 1,131,278.98, 1,561,072.66 and 666,059.43

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Solution

The fourth proportional to 1,131,278.98, 1,561,072.66 and 666,059.43 is: 919,107.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,278.98 : 1,561,072.66 = 666,059.43 : x
  2. Step 2: Convert to fraction form
    1,131,278.98/1,561,072.66 = 666,059.43/x
  3. Step 3: Cross multiply
    1,131,278.98x = 1,561,072.66 × 666,059.43
  4. Step 4: Simplify right side
    1,131,278.98x = 1,039,767,166,108.18
  5. Step 5: Solve for x
    x = 1,039,767,166,108.18/1,131,278.98
  6. Step 6: Final answer
    x = 919,107.65

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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.