Home / 318,456-698,148

Finding the Third Proportional to 318,456 and 698,148

Calculator

Solution

The third proportional to 318,456 and 698,148 is: 1,530,543.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,456 : 698,148 = 698,148 : x
  2. Step 2: Convert to fraction form
    318,456/698,148 = 698,148/x
  3. Step 3: Cross multiply
    318,456x = 698,148 × 698,148
  4. Step 4: Simplify right side
    318,456x = 487,410,629,904
  5. Step 5: Solve for x
    x = 487,410,629,904/318,456
  6. Step 6: Final answer
    x = 1,530,543.09

Related Problems

Find third proportional to 159,228 and 349,074
Half scale
Find third proportional to 636,912 and 1,396,296
Double scale
Find third proportional to 318,458 and 698,152
Similar ratio
Find third proportional to 477,684 and 1,047,222
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.