Home / 2,165,822.80-2,988,870.70-1,185,745.28

Finding the Fourth Proportional to 2,165,822.80, 2,988,870.70 and 1,185,745.28

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Solution

The fourth proportional to 2,165,822.80, 2,988,870.70 and 1,185,745.28 is: 1,636,347.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,165,822.80 : 2,988,870.70 = 1,185,745.28 : x
  2. Step 2: Convert to fraction form
    2,165,822.80/2,988,870.70 = 1,185,745.28/x
  3. Step 3: Cross multiply
    2,165,822.80x = 2,988,870.70 × 1,185,745.28
  4. Step 4: Simplify right side
    2,165,822.80x = 3,544,039,325,055.30
  5. Step 5: Solve for x
    x = 3,544,039,325,055.30/2,165,822.80
  6. Step 6: Final answer
    x = 1,636,347.78

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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.