Home / 312,200-663,274

Finding the Third Proportional to 312,200 and 663,274

Calculator

Solution

The third proportional to 312,200 and 663,274 is: 1,409,136.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,200 : 663,274 = 663,274 : x
  2. Step 2: Convert to fraction form
    312,200/663,274 = 663,274/x
  3. Step 3: Cross multiply
    312,200x = 663,274 × 663,274
  4. Step 4: Simplify right side
    312,200x = 439,932,399,076
  5. Step 5: Solve for x
    x = 439,932,399,076/312,200
  6. Step 6: Final answer
    x = 1,409,136.45

Related Problems

Find third proportional to 156,100 and 331,637
Half scale
Find third proportional to 624,400 and 1,326,548
Double scale
Find third proportional to 312,202 and 663,278
Similar ratio
Find third proportional to 468,300 and 994,911
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.