Home / 1,638,993.49-2,256,664.15-1,393,495.45

Finding the Fourth Proportional to 1,638,993.49, 2,256,664.15 and 1,393,495.45

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Solution

The fourth proportional to 1,638,993.49, 2,256,664.15 and 1,393,495.45 is: 1,918,647.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638,993.49 : 2,256,664.15 = 1,393,495.45 : x
  2. Step 2: Convert to fraction form
    1,638,993.49/2,256,664.15 = 1,393,495.45/x
  3. Step 3: Cross multiply
    1,638,993.49x = 2,256,664.15 × 1,393,495.45
  4. Step 4: Simplify right side
    1,638,993.49x = 3,144,651,221,303.33
  5. Step 5: Solve for x
    x = 3,144,651,221,303.33/1,638,993.49
  6. Step 6: Final answer
    x = 1,918,647.78

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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.