Home / 198,973,080-428,179,344

Finding the Third Proportional to 198,973,080 and 428,179,344

Calculator

Solution

The third proportional to 198,973,080 and 428,179,344 is: 921,418,870.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,973,080 : 428,179,344 = 428,179,344 : x
  2. Step 2: Convert to fraction form
    198,973,080/428,179,344 = 428,179,344/x
  3. Step 3: Cross multiply
    198,973,080x = 428,179,344 × 428,179,344
  4. Step 4: Simplify right side
    198,973,080x = 183,337,550,628,270,336
  5. Step 5: Solve for x
    x = 183,337,550,628,270,336/198,973,080
  6. Step 6: Final answer
    x = 921,418,870.47

Related Problems

Find third proportional to 99,486,540 and 214,089,672
Half scale
Find third proportional to 397,946,160 and 856,358,688
Double scale
Find third proportional to 198,973,082 and 428,179,348
Similar ratio
Find third proportional to 298,459,620 and 642,269,016
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.