Home / 1,285,722-1,928,968.44-387,192.96

Finding the Fourth Proportional to 1,285,722, 1,928,968.44 and 387,192.96

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Solution

The fourth proportional to 1,285,722, 1,928,968.44 and 387,192.96 is: 580,905.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,285,722 : 1,928,968.44 = 387,192.96 : x
  2. Step 2: Convert to fraction form
    1,285,722/1,928,968.44 = 387,192.96/x
  3. Step 3: Cross multiply
    1,285,722x = 1,928,968.44 × 387,192.96
  4. Step 4: Simplify right side
    1,285,722x = 746,883,000,030.18
  5. Step 5: Solve for x
    x = 746,883,000,030.18/1,285,722
  6. Step 6: Final answer
    x = 580,905.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.