Home / 1,405,053.94-1,939,009.87-861,489.44

Finding the Fourth Proportional to 1,405,053.94, 1,939,009.87 and 861,489.44

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Solution

The fourth proportional to 1,405,053.94, 1,939,009.87 and 861,489.44 is: 1,188,877.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,053.94 : 1,939,009.87 = 861,489.44 : x
  2. Step 2: Convert to fraction form
    1,405,053.94/1,939,009.87 = 861,489.44/x
  3. Step 3: Cross multiply
    1,405,053.94x = 1,939,009.87 × 861,489.44
  4. Step 4: Simplify right side
    1,405,053.94x = 1,670,436,529,754.57
  5. Step 5: Solve for x
    x = 1,670,436,529,754.57/1,405,053.94
  6. Step 6: Final answer
    x = 1,188,877.15

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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.