Home / 324,111-490,638

Finding the Third Proportional to 324,111 and 490,638

Calculator

Solution

The third proportional to 324,111 and 490,638 is: 742,725.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,111 : 490,638 = 490,638 : x
  2. Step 2: Convert to fraction form
    324,111/490,638 = 490,638/x
  3. Step 3: Cross multiply
    324,111x = 490,638 × 490,638
  4. Step 4: Simplify right side
    324,111x = 240,725,647,044
  5. Step 5: Solve for x
    x = 240,725,647,044/324,111
  6. Step 6: Final answer
    x = 742,725.94

Related Problems

Find third proportional to 162,055.50 and 245,319
Half scale
Find third proportional to 648,222 and 981,276
Double scale
Find third proportional to 324,113 and 490,641
Similar ratio
Find third proportional to 486,166.50 and 735,957
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.