Home / 1,222,181.08-1,686,584.52-678,285.28

Finding the Fourth Proportional to 1,222,181.08, 1,686,584.52 and 678,285.28

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Solution

The fourth proportional to 1,222,181.08, 1,686,584.52 and 678,285.28 is: 936,019.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,181.08 : 1,686,584.52 = 678,285.28 : x
  2. Step 2: Convert to fraction form
    1,222,181.08/1,686,584.52 = 678,285.28/x
  3. Step 3: Cross multiply
    1,222,181.08x = 1,686,584.52 × 678,285.28
  4. Step 4: Simplify right side
    1,222,181.08x = 1,143,985,453,391.87
  5. Step 5: Solve for x
    x = 1,143,985,453,391.87/1,222,181.08
  6. Step 6: Final answer
    x = 936,019.61

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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.