Home / 209,496-455,420

Finding the Third Proportional to 209,496 and 455,420

Calculator

Solution

The third proportional to 209,496 and 455,420 is: 990,030.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,496 : 455,420 = 455,420 : x
  2. Step 2: Convert to fraction form
    209,496/455,420 = 455,420/x
  3. Step 3: Cross multiply
    209,496x = 455,420 × 455,420
  4. Step 4: Simplify right side
    209,496x = 207,407,376,400
  5. Step 5: Solve for x
    x = 207,407,376,400/209,496
  6. Step 6: Final answer
    x = 990,030.25

Related Problems

Find third proportional to 104,748 and 227,710
Half scale
Find third proportional to 418,992 and 910,840
Double scale
Find third proportional to 209,498 and 455,424
Similar ratio
Find third proportional to 314,244 and 683,130
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.