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Finding the Fourth Proportional to 1,261,962.82, 1,741,661.49 and 718,230.88

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Solution

The fourth proportional to 1,261,962.82, 1,741,661.49 and 718,230.88 is: 991,245.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,962.82 : 1,741,661.49 = 718,230.88 : x
  2. Step 2: Convert to fraction form
    1,261,962.82/1,741,661.49 = 718,230.88/x
  3. Step 3: Cross multiply
    1,261,962.82x = 1,741,661.49 × 718,230.88
  4. Step 4: Simplify right side
    1,261,962.82x = 1,250,915,064,624.81
  5. Step 5: Solve for x
    x = 1,250,915,064,624.81/1,261,962.82
  6. Step 6: Final answer
    x = 991,245.58

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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.