Home / 420,300-628,965

Finding the Third Proportional to 420,300 and 628,965

Calculator

Solution

The third proportional to 420,300 and 628,965 is: 941,225.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,300 : 628,965 = 628,965 : x
  2. Step 2: Convert to fraction form
    420,300/628,965 = 628,965/x
  3. Step 3: Cross multiply
    420,300x = 628,965 × 628,965
  4. Step 4: Simplify right side
    420,300x = 395,596,971,225
  5. Step 5: Solve for x
    x = 395,596,971,225/420,300
  6. Step 6: Final answer
    x = 941,225.25

Related Problems

Find third proportional to 210,150 and 314,482.50
Half scale
Find third proportional to 840,600 and 1,257,930
Double scale
Find third proportional to 420,302 and 628,968
Similar ratio
Find third proportional to 630,450 and 943,447.50
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.