Home / 1,382,507.46-1,907,971.20-770,859.45

Finding the Fourth Proportional to 1,382,507.46, 1,907,971.20 and 770,859.45

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Solution

The fourth proportional to 1,382,507.46, 1,907,971.20 and 770,859.45 is: 1,063,847.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382,507.46 : 1,907,971.20 = 770,859.45 : x
  2. Step 2: Convert to fraction form
    1,382,507.46/1,907,971.20 = 770,859.45/x
  3. Step 3: Cross multiply
    1,382,507.46x = 1,907,971.20 × 770,859.45
  4. Step 4: Simplify right side
    1,382,507.46x = 1,470,777,629,847.84
  5. Step 5: Solve for x
    x = 1,470,777,629,847.84/1,382,507.46
  6. Step 6: Final answer
    x = 1,063,847.88

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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.