Home / 1,382,312.88-1,907,512.20-770,445.36

Finding the Fourth Proportional to 1,382,312.88, 1,907,512.20 and 770,445.36

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Solution

The fourth proportional to 1,382,312.88, 1,907,512.20 and 770,445.36 is: 1,063,170.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,382,312.88 : 1,907,512.20 = 770,445.36 : x
  2. Step 2: Convert to fraction form
    1,382,312.88/1,907,512.20 = 770,445.36/x
  3. Step 3: Cross multiply
    1,382,312.88x = 1,907,512.20 × 770,445.36
  4. Step 4: Simplify right side
    1,382,312.88x = 1,469,633,923,633.39
  5. Step 5: Solve for x
    x = 1,469,633,923,633.39/1,382,312.88
  6. Step 6: Final answer
    x = 1,063,170.25

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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.