Home / 1,188,590.84-1,640,245.66-644,725.26

Finding the Fourth Proportional to 1,188,590.84, 1,640,245.66 and 644,725.26

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Solution

The fourth proportional to 1,188,590.84, 1,640,245.66 and 644,725.26 is: 889,715.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,590.84 : 1,640,245.66 = 644,725.26 : x
  2. Step 2: Convert to fraction form
    1,188,590.84/1,640,245.66 = 644,725.26/x
  3. Step 3: Cross multiply
    1,188,590.84x = 1,640,245.66 × 644,725.26
  4. Step 4: Simplify right side
    1,188,590.84x = 1,057,507,809,607.37
  5. Step 5: Solve for x
    x = 1,057,507,809,607.37/1,188,590.84
  6. Step 6: Final answer
    x = 889,715.60

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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.