Home / 768.38-1,220.63

Finding the Third Proportional to 768.38 and 1,220.63

Calculator

Solution

The third proportional to 768.38 and 1,220.63 is: 1,939.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    768.38 : 1,220.63 = 1,220.63 : x
  2. Step 2: Convert to fraction form
    768.38/1,220.63 = 1,220.63/x
  3. Step 3: Cross multiply
    768.38x = 1,220.63 × 1,220.63
  4. Step 4: Simplify right side
    768.38x = 1,489,925.39
  5. Step 5: Solve for x
    x = 1,489,925.39/768.38
  6. Step 6: Final answer
    x = 1,939.06

Related Problems

Find third proportional to 384.19 and 610.31
Half scale
Find third proportional to 1,536.75 and 2,441.25
Double scale
Find third proportional to 770 and 1,224
Similar ratio
Find third proportional to 1,152.56 and 1,830.94
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.