Home / 321,354-657,450

Finding the Third Proportional to 321,354 and 657,450

Calculator

Solution

The third proportional to 321,354 and 657,450 is: 1,345,060.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,354 : 657,450 = 657,450 : x
  2. Step 2: Convert to fraction form
    321,354/657,450 = 657,450/x
  3. Step 3: Cross multiply
    321,354x = 657,450 × 657,450
  4. Step 4: Simplify right side
    321,354x = 432,240,502,500
  5. Step 5: Solve for x
    x = 432,240,502,500/321,354
  6. Step 6: Final answer
    x = 1,345,060.28

Related Problems

Find third proportional to 160,677 and 328,725
Half scale
Find third proportional to 642,708 and 1,314,900
Double scale
Find third proportional to 321,356 and 657,454
Similar ratio
Find third proportional to 482,031 and 986,175
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.