Home / 312,272-671,920

Finding the Third Proportional to 312,272 and 671,920

Calculator

Solution

The third proportional to 312,272 and 671,920 is: 1,445,779.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,272 : 671,920 = 671,920 : x
  2. Step 2: Convert to fraction form
    312,272/671,920 = 671,920/x
  3. Step 3: Cross multiply
    312,272x = 671,920 × 671,920
  4. Step 4: Simplify right side
    312,272x = 451,476,486,400
  5. Step 5: Solve for x
    x = 451,476,486,400/312,272
  6. Step 6: Final answer
    x = 1,445,779.60

Related Problems

Find third proportional to 156,136 and 335,960
Half scale
Find third proportional to 624,544 and 1,343,840
Double scale
Find third proportional to 312,274 and 671,924
Similar ratio
Find third proportional to 468,408 and 1,007,880
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.