Home / 1,381,896.90-1,906,992.45-778,284.90

Finding the Fourth Proportional to 1,381,896.90, 1,906,992.45 and 778,284.90

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Solution

The fourth proportional to 1,381,896.90, 1,906,992.45 and 778,284.90 is: 1,074,018.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,381,896.90 : 1,906,992.45 = 778,284.90 : x
  2. Step 2: Convert to fraction form
    1,381,896.90/1,906,992.45 = 778,284.90/x
  3. Step 3: Cross multiply
    1,381,896.90x = 1,906,992.45 × 778,284.90
  4. Step 4: Simplify right side
    1,381,896.90x = 1,484,183,428,249.01
  5. Step 5: Solve for x
    x = 1,484,183,428,249.01/1,381,896.90
  6. Step 6: Final answer
    x = 1,074,018.93

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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.