Home / 129,862,858-285,697,980

Finding the Third Proportional to 129,862,858 and 285,697,980

Calculator

Solution

The third proportional to 129,862,858 and 285,697,980 is: 628,534,879.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,862,858 : 285,697,980 = 285,697,980 : x
  2. Step 2: Convert to fraction form
    129,862,858/285,697,980 = 285,697,980/x
  3. Step 3: Cross multiply
    129,862,858x = 285,697,980 × 285,697,980
  4. Step 4: Simplify right side
    129,862,858x = 81,623,335,776,080,400
  5. Step 5: Solve for x
    x = 81,623,335,776,080,400/129,862,858
  6. Step 6: Final answer
    x = 628,534,879.28

Related Problems

Find third proportional to 64,931,429 and 142,848,990
Half scale
Find third proportional to 259,725,716 and 571,395,960
Double scale
Find third proportional to 129,862,860 and 285,697,984
Similar ratio
Find third proportional to 194,794,287 and 428,546,970
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.