Home / 291,672-638,208

Finding the Third Proportional to 291,672 and 638,208

Calculator

Solution

The third proportional to 291,672 and 638,208 is: 1,396,464.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,672 : 638,208 = 638,208 : x
  2. Step 2: Convert to fraction form
    291,672/638,208 = 638,208/x
  3. Step 3: Cross multiply
    291,672x = 638,208 × 638,208
  4. Step 4: Simplify right side
    291,672x = 407,309,451,264
  5. Step 5: Solve for x
    x = 407,309,451,264/291,672
  6. Step 6: Final answer
    x = 1,396,464.01

Related Problems

Find third proportional to 145,836 and 319,104
Half scale
Find third proportional to 583,344 and 1,276,416
Double scale
Find third proportional to 291,674 and 638,212
Similar ratio
Find third proportional to 437,508 and 957,312
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.