Home / 1,091,761.40-1,636,086.90-805,215.80

Finding the Fourth Proportional to 1,091,761.40, 1,636,086.90 and 805,215.80

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Solution

The fourth proportional to 1,091,761.40, 1,636,086.90 and 805,215.80 is: 1,206,676.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,091,761.40 : 1,636,086.90 = 805,215.80 : x
  2. Step 2: Convert to fraction form
    1,091,761.40/1,636,086.90 = 805,215.80/x
  3. Step 3: Cross multiply
    1,091,761.40x = 1,636,086.90 × 805,215.80
  4. Step 4: Simplify right side
    1,091,761.40x = 1,317,403,022,053.02
  5. Step 5: Solve for x
    x = 1,317,403,022,053.02/1,091,761.40
  6. Step 6: Final answer
    x = 1,206,676.68

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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.