Home / 1,287,600.54-1,777,108.65-743,638.56

Finding the Fourth Proportional to 1,287,600.54, 1,777,108.65 and 743,638.56

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Solution

The fourth proportional to 1,287,600.54, 1,777,108.65 and 743,638.56 is: 1,026,348.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,600.54 : 1,777,108.65 = 743,638.56 : x
  2. Step 2: Convert to fraction form
    1,287,600.54/1,777,108.65 = 743,638.56/x
  3. Step 3: Cross multiply
    1,287,600.54x = 1,777,108.65 × 743,638.56
  4. Step 4: Simplify right side
    1,287,600.54x = 1,321,526,517,449.54
  5. Step 5: Solve for x
    x = 1,321,526,517,449.54/1,287,600.54
  6. Step 6: Final answer
    x = 1,026,348.22

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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.