Home / 1,290,556.56-1,936,228.68-659,913.36

Finding the Fourth Proportional to 1,290,556.56, 1,936,228.68 and 659,913.36

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Solution

The fourth proportional to 1,290,556.56, 1,936,228.68 and 659,913.36 is: 990,071.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,556.56 : 1,936,228.68 = 659,913.36 : x
  2. Step 2: Convert to fraction form
    1,290,556.56/1,936,228.68 = 659,913.36/x
  3. Step 3: Cross multiply
    1,290,556.56x = 1,936,228.68 × 659,913.36
  4. Step 4: Simplify right side
    1,290,556.56x = 1,277,743,173,947.16
  5. Step 5: Solve for x
    x = 1,277,743,173,947.16/1,290,556.56
  6. Step 6: Final answer
    x = 990,071.43

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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.