Home / 298,799-645,136

Finding the Third Proportional to 298,799 and 645,136

Calculator

Solution

The third proportional to 298,799 and 645,136 is: 1,392,911.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,799 : 645,136 = 645,136 : x
  2. Step 2: Convert to fraction form
    298,799/645,136 = 645,136/x
  3. Step 3: Cross multiply
    298,799x = 645,136 × 645,136
  4. Step 4: Simplify right side
    298,799x = 416,200,458,496
  5. Step 5: Solve for x
    x = 416,200,458,496/298,799
  6. Step 6: Final answer
    x = 1,392,911.15

Related Problems

Find third proportional to 149,399.50 and 322,568
Half scale
Find third proportional to 597,598 and 1,290,272
Double scale
Find third proportional to 298,801 and 645,140
Similar ratio
Find third proportional to 448,198.50 and 967,704
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.