Home / 1,405,052.82-1,939,019.85-861,083.50

Finding the Fourth Proportional to 1,405,052.82, 1,939,019.85 and 861,083.50

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Solution

The fourth proportional to 1,405,052.82, 1,939,019.85 and 861,083.50 is: 1,188,324.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405,052.82 : 1,939,019.85 = 861,083.50 : x
  2. Step 2: Convert to fraction form
    1,405,052.82/1,939,019.85 = 861,083.50/x
  3. Step 3: Cross multiply
    1,405,052.82x = 1,939,019.85 × 861,083.50
  4. Step 4: Simplify right side
    1,405,052.82x = 1,669,657,999,007.48
  5. Step 5: Solve for x
    x = 1,669,657,999,007.48/1,405,052.82
  6. Step 6: Final answer
    x = 1,188,324.01

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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.