Home / 612,720-919,728

Finding the Third Proportional to 612,720 and 919,728

Calculator

Solution

The third proportional to 612,720 and 919,728 is: 1,380,564.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,720 : 919,728 = 919,728 : x
  2. Step 2: Convert to fraction form
    612,720/919,728 = 919,728/x
  3. Step 3: Cross multiply
    612,720x = 919,728 × 919,728
  4. Step 4: Simplify right side
    612,720x = 845,899,593,984
  5. Step 5: Solve for x
    x = 845,899,593,984/612,720
  6. Step 6: Final answer
    x = 1,380,564.69

Related Problems

Find third proportional to 306,360 and 459,864
Half scale
Find third proportional to 1,225,440 and 1,839,456
Double scale
Find third proportional to 612,722 and 919,731
Similar ratio
Find third proportional to 919,080 and 1,379,592
1.5x scale

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.