Home / 1,389,740.52-2,084,628.06-378,912.36

Finding the Fourth Proportional to 1,389,740.52, 2,084,628.06 and 378,912.36

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Solution

The fourth proportional to 1,389,740.52, 2,084,628.06 and 378,912.36 is: 568,373.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,740.52 : 2,084,628.06 = 378,912.36 : x
  2. Step 2: Convert to fraction form
    1,389,740.52/2,084,628.06 = 378,912.36/x
  3. Step 3: Cross multiply
    1,389,740.52x = 2,084,628.06 × 378,912.36
  4. Step 4: Simplify right side
    1,389,740.52x = 789,891,337,936.82
  5. Step 5: Solve for x
    x = 789,891,337,936.82/1,389,740.52
  6. Step 6: Final answer
    x = 568,373.25

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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.