Home / 309,396-492,310

Finding the Third Proportional to 309,396 and 492,310

Calculator

Solution

The third proportional to 309,396 and 492,310 is: 783,362.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,396 : 492,310 = 492,310 : x
  2. Step 2: Convert to fraction form
    309,396/492,310 = 492,310/x
  3. Step 3: Cross multiply
    309,396x = 492,310 × 492,310
  4. Step 4: Simplify right side
    309,396x = 242,369,136,100
  5. Step 5: Solve for x
    x = 242,369,136,100/309,396
  6. Step 6: Final answer
    x = 783,362.22

Related Problems

Find third proportional to 154,698 and 246,155
Half scale
Find third proportional to 618,792 and 984,620
Double scale
Find third proportional to 309,398 and 492,313
Similar ratio
Find third proportional to 464,094 and 738,465
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.