Home / 308,928-676,920

Finding the Third Proportional to 308,928 and 676,920

Calculator

Solution

The third proportional to 308,928 and 676,920 is: 1,483,260.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,928 : 676,920 = 676,920 : x
  2. Step 2: Convert to fraction form
    308,928/676,920 = 676,920/x
  3. Step 3: Cross multiply
    308,928x = 676,920 × 676,920
  4. Step 4: Simplify right side
    308,928x = 458,220,686,400
  5. Step 5: Solve for x
    x = 458,220,686,400/308,928
  6. Step 6: Final answer
    x = 1,483,260.46

Related Problems

Find third proportional to 154,464 and 338,460
Half scale
Find third proportional to 617,856 and 1,353,840
Double scale
Find third proportional to 308,930 and 676,924
Similar ratio
Find third proportional to 463,392 and 1,015,380
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.