Home / 401,364-621,810

Finding the Third Proportional to 401,364 and 621,810

Calculator

Solution

The third proportional to 401,364 and 621,810 is: 963,334.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,364 : 621,810 = 621,810 : x
  2. Step 2: Convert to fraction form
    401,364/621,810 = 621,810/x
  3. Step 3: Cross multiply
    401,364x = 621,810 × 621,810
  4. Step 4: Simplify right side
    401,364x = 386,647,676,100
  5. Step 5: Solve for x
    x = 386,647,676,100/401,364
  6. Step 6: Final answer
    x = 963,334.22

Related Problems

Find third proportional to 200,682 and 310,905
Half scale
Find third proportional to 802,728 and 1,243,620
Double scale
Find third proportional to 401,366 and 621,813
Similar ratio
Find third proportional to 602,046 and 932,715
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.