Home / 312,148-671,640

Finding the Third Proportional to 312,148 and 671,640

Calculator

Solution

The third proportional to 312,148 and 671,640 is: 1,445,148.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,148 : 671,640 = 671,640 : x
  2. Step 2: Convert to fraction form
    312,148/671,640 = 671,640/x
  3. Step 3: Cross multiply
    312,148x = 671,640 × 671,640
  4. Step 4: Simplify right side
    312,148x = 451,100,289,600
  5. Step 5: Solve for x
    x = 451,100,289,600/312,148
  6. Step 6: Final answer
    x = 1,445,148.74

Related Problems

Find third proportional to 156,074 and 335,820
Half scale
Find third proportional to 624,296 and 1,343,280
Double scale
Find third proportional to 312,150 and 671,644
Similar ratio
Find third proportional to 468,222 and 1,007,460
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.