Home / 311,920-495,875

Finding the Third Proportional to 311,920 and 495,875

Calculator

Solution

The third proportional to 311,920 and 495,875 is: 788,317.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,920 : 495,875 = 495,875 : x
  2. Step 2: Convert to fraction form
    311,920/495,875 = 495,875/x
  3. Step 3: Cross multiply
    311,920x = 495,875 × 495,875
  4. Step 4: Simplify right side
    311,920x = 245,892,015,625
  5. Step 5: Solve for x
    x = 245,892,015,625/311,920
  6. Step 6: Final answer
    x = 788,317.57

Related Problems

Find third proportional to 155,960 and 247,937.50
Half scale
Find third proportional to 623,840 and 991,750
Double scale
Find third proportional to 311,922 and 495,878
Similar ratio
Find third proportional to 467,880 and 743,812.50
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.