Home / 315,177-691,608

Finding the Third Proportional to 315,177 and 691,608

Calculator

Solution

The third proportional to 315,177 and 691,608 is: 1,517,628.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,177 : 691,608 = 691,608 : x
  2. Step 2: Convert to fraction form
    315,177/691,608 = 691,608/x
  3. Step 3: Cross multiply
    315,177x = 691,608 × 691,608
  4. Step 4: Simplify right side
    315,177x = 478,321,625,664
  5. Step 5: Solve for x
    x = 478,321,625,664/315,177
  6. Step 6: Final answer
    x = 1,517,628.59

Related Problems

Find third proportional to 157,588.50 and 345,804
Half scale
Find third proportional to 630,354 and 1,383,216
Double scale
Find third proportional to 315,179 and 691,612
Similar ratio
Find third proportional to 472,765.50 and 1,037,412
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.