Home / 291,920-628,858

Finding the Third Proportional to 291,920 and 628,858

Calculator

Solution

The third proportional to 291,920 and 628,858 is: 1,354,694.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,920 : 628,858 = 628,858 : x
  2. Step 2: Convert to fraction form
    291,920/628,858 = 628,858/x
  3. Step 3: Cross multiply
    291,920x = 628,858 × 628,858
  4. Step 4: Simplify right side
    291,920x = 395,462,384,164
  5. Step 5: Solve for x
    x = 395,462,384,164/291,920
  6. Step 6: Final answer
    x = 1,354,694.38

Related Problems

Find third proportional to 145,960 and 314,429
Half scale
Find third proportional to 583,840 and 1,257,716
Double scale
Find third proportional to 291,922 and 628,862
Similar ratio
Find third proportional to 437,880 and 943,287
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.