Home / 1,395,555.78-1,925,913.48-783,816.33

Finding the Fourth Proportional to 1,395,555.78, 1,925,913.48 and 783,816.33

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Solution

The fourth proportional to 1,395,555.78, 1,925,913.48 and 783,816.33 is: 1,081,692.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395,555.78 : 1,925,913.48 = 783,816.33 : x
  2. Step 2: Convert to fraction form
    1,395,555.78/1,925,913.48 = 783,816.33/x
  3. Step 3: Cross multiply
    1,395,555.78x = 1,925,913.48 × 783,816.33
  4. Step 4: Simplify right side
    1,395,555.78x = 1,509,562,435,791.13
  5. Step 5: Solve for x
    x = 1,509,562,435,791.13/1,395,555.78
  6. Step 6: Final answer
    x = 1,081,692.65

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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.