Home / 445,728-644,000

Finding the Third Proportional to 445,728 and 644,000

Calculator

Solution

The third proportional to 445,728 and 644,000 is: 930,468.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,728 : 644,000 = 644,000 : x
  2. Step 2: Convert to fraction form
    445,728/644,000 = 644,000/x
  3. Step 3: Cross multiply
    445,728x = 644,000 × 644,000
  4. Step 4: Simplify right side
    445,728x = 414,736,000,000
  5. Step 5: Solve for x
    x = 414,736,000,000/445,728
  6. Step 6: Final answer
    x = 930,468.81

Related Problems

Find third proportional to 222,864 and 322,000
Half scale
Find third proportional to 891,456 and 1,288,000
Double scale
Find third proportional to 445,730 and 644,003
Similar ratio
Find third proportional to 668,592 and 966,000
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.