Home / 1,221,266.89-1,685,550.09-677,577.61

Finding the Fourth Proportional to 1,221,266.89, 1,685,550.09 and 677,577.61

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Solution

The fourth proportional to 1,221,266.89, 1,685,550.09 and 677,577.61 is: 935,169.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,266.89 : 1,685,550.09 = 677,577.61 : x
  2. Step 2: Convert to fraction form
    1,221,266.89/1,685,550.09 = 677,577.61/x
  3. Step 3: Cross multiply
    1,221,266.89x = 1,685,550.09 × 677,577.61
  4. Step 4: Simplify right side
    1,221,266.89x = 1,142,091,001,517.48
  5. Step 5: Solve for x
    x = 1,142,091,001,517.48/1,221,266.89
  6. Step 6: Final answer
    x = 935,169.05

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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.