Home / 1,389,608.58-1,916,137.04-905,275.56

Finding the Fourth Proportional to 1,389,608.58, 1,916,137.04 and 905,275.56

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Solution

The fourth proportional to 1,389,608.58, 1,916,137.04 and 905,275.56 is: 1,248,288.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,608.58 : 1,916,137.04 = 905,275.56 : x
  2. Step 2: Convert to fraction form
    1,389,608.58/1,916,137.04 = 905,275.56/x
  3. Step 3: Cross multiply
    1,389,608.58x = 1,916,137.04 × 905,275.56
  4. Step 4: Simplify right side
    1,389,608.58x = 1,734,632,034,581.88
  5. Step 5: Solve for x
    x = 1,734,632,034,581.88/1,389,608.58
  6. Step 6: Final answer
    x = 1,248,288.23

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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.