Home / 405,240-879,168

Finding the Third Proportional to 405,240 and 879,168

Calculator

Solution

The third proportional to 405,240 and 879,168 is: 1,907,354.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,240 : 879,168 = 879,168 : x
  2. Step 2: Convert to fraction form
    405,240/879,168 = 879,168/x
  3. Step 3: Cross multiply
    405,240x = 879,168 × 879,168
  4. Step 4: Simplify right side
    405,240x = 772,936,372,224
  5. Step 5: Solve for x
    x = 772,936,372,224/405,240
  6. Step 6: Final answer
    x = 1,907,354.59

Related Problems

Find third proportional to 202,620 and 439,584
Half scale
Find third proportional to 810,480 and 1,758,336
Double scale
Find third proportional to 405,242 and 879,172
Similar ratio
Find third proportional to 607,860 and 1,318,752
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.