Home / 310,530-668,628

Finding the Third Proportional to 310,530 and 668,628

Calculator

Solution

The third proportional to 310,530 and 668,628 is: 1,439,678.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,530 : 668,628 = 668,628 : x
  2. Step 2: Convert to fraction form
    310,530/668,628 = 668,628/x
  3. Step 3: Cross multiply
    310,530x = 668,628 × 668,628
  4. Step 4: Simplify right side
    310,530x = 447,063,402,384
  5. Step 5: Solve for x
    x = 447,063,402,384/310,530
  6. Step 6: Final answer
    x = 1,439,678.62

Related Problems

Find third proportional to 155,265 and 334,314
Half scale
Find third proportional to 621,060 and 1,337,256
Double scale
Find third proportional to 310,532 and 668,632
Similar ratio
Find third proportional to 465,795 and 1,002,942
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.