Home / 1,394,112.21-1,923,875.81-782,180.51

Finding the Fourth Proportional to 1,394,112.21, 1,923,875.81 and 782,180.51

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Solution

The fourth proportional to 1,394,112.21, 1,923,875.81 and 782,180.51 is: 1,079,409.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,394,112.21 : 1,923,875.81 = 782,180.51 : x
  2. Step 2: Convert to fraction form
    1,394,112.21/1,923,875.81 = 782,180.51/x
  3. Step 3: Cross multiply
    1,394,112.21x = 1,923,875.81 × 782,180.51
  4. Step 4: Simplify right side
    1,394,112.21x = 1,504,818,148,712.18
  5. Step 5: Solve for x
    x = 1,504,818,148,712.18/1,394,112.21
  6. Step 6: Final answer
    x = 1,079,409.63

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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.