Home / 1,380,284.20-1,904,745.54-776,555.56

Finding the Fourth Proportional to 1,380,284.20, 1,904,745.54 and 776,555.56

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Solution

The fourth proportional to 1,380,284.20, 1,904,745.54 and 776,555.56 is: 1,071,620.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,284.20 : 1,904,745.54 = 776,555.56 : x
  2. Step 2: Convert to fraction form
    1,380,284.20/1,904,745.54 = 776,555.56/x
  3. Step 3: Cross multiply
    1,380,284.20x = 1,904,745.54 × 776,555.56
  4. Step 4: Simplify right side
    1,380,284.20x = 1,479,140,739,472.20
  5. Step 5: Solve for x
    x = 1,479,140,739,472.20/1,380,284.20
  6. Step 6: Final answer
    x = 1,071,620.42

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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.