Home / 315,318-691,954

Finding the Third Proportional to 315,318 and 691,954

Calculator

Solution

The third proportional to 315,318 and 691,954 is: 1,518,468.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,318 : 691,954 = 691,954 : x
  2. Step 2: Convert to fraction form
    315,318/691,954 = 691,954/x
  3. Step 3: Cross multiply
    315,318x = 691,954 × 691,954
  4. Step 4: Simplify right side
    315,318x = 478,800,338,116
  5. Step 5: Solve for x
    x = 478,800,338,116/315,318
  6. Step 6: Final answer
    x = 1,518,468.14

Related Problems

Find third proportional to 157,659 and 345,977
Half scale
Find third proportional to 630,636 and 1,383,908
Double scale
Find third proportional to 315,320 and 691,958
Similar ratio
Find third proportional to 472,977 and 1,037,931
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.