Home / 321,738-489,525

Finding the Third Proportional to 321,738 and 489,525

Calculator

Solution

The third proportional to 321,738 and 489,525 is: 744,813.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,738 : 489,525 = 489,525 : x
  2. Step 2: Convert to fraction form
    321,738/489,525 = 489,525/x
  3. Step 3: Cross multiply
    321,738x = 489,525 × 489,525
  4. Step 4: Simplify right side
    321,738x = 239,634,725,625
  5. Step 5: Solve for x
    x = 239,634,725,625/321,738
  6. Step 6: Final answer
    x = 744,813.25

Related Problems

Find third proportional to 160,869 and 244,762.50
Half scale
Find third proportional to 643,476 and 979,050
Double scale
Find third proportional to 321,740 and 489,528
Similar ratio
Find third proportional to 482,607 and 734,287.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.