Home / 310,920-659,205

Finding the Third Proportional to 310,920 and 659,205

Calculator

Solution

The third proportional to 310,920 and 659,205 is: 1,397,630.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,920 : 659,205 = 659,205 : x
  2. Step 2: Convert to fraction form
    310,920/659,205 = 659,205/x
  3. Step 3: Cross multiply
    310,920x = 659,205 × 659,205
  4. Step 4: Simplify right side
    310,920x = 434,551,232,025
  5. Step 5: Solve for x
    x = 434,551,232,025/310,920
  6. Step 6: Final answer
    x = 1,397,630.36

Related Problems

Find third proportional to 155,460 and 329,602.50
Half scale
Find third proportional to 621,840 and 1,318,410
Double scale
Find third proportional to 310,922 and 659,209
Similar ratio
Find third proportional to 466,380 and 988,807.50
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.