Home / 318,122-686,084

Finding the Third Proportional to 318,122 and 686,084

Calculator

Solution

The third proportional to 318,122 and 686,084 is: 1,479,656.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,122 : 686,084 = 686,084 : x
  2. Step 2: Convert to fraction form
    318,122/686,084 = 686,084/x
  3. Step 3: Cross multiply
    318,122x = 686,084 × 686,084
  4. Step 4: Simplify right side
    318,122x = 470,711,255,056
  5. Step 5: Solve for x
    x = 470,711,255,056/318,122
  6. Step 6: Final answer
    x = 1,479,656.41

Related Problems

Find third proportional to 159,061 and 343,042
Half scale
Find third proportional to 636,244 and 1,372,168
Double scale
Find third proportional to 318,124 and 686,088
Similar ratio
Find third proportional to 477,183 and 1,029,126
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.