Home / 324,115-490,643

Finding the Third Proportional to 324,115 and 490,643

Calculator

Solution

The third proportional to 324,115 and 490,643 is: 742,731.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,115 : 490,643 = 490,643 : x
  2. Step 2: Convert to fraction form
    324,115/490,643 = 490,643/x
  3. Step 3: Cross multiply
    324,115x = 490,643 × 490,643
  4. Step 4: Simplify right side
    324,115x = 240,730,553,449
  5. Step 5: Solve for x
    x = 240,730,553,449/324,115
  6. Step 6: Final answer
    x = 742,731.91

Related Problems

Find third proportional to 162,057.50 and 245,321.50
Half scale
Find third proportional to 648,230 and 981,286
Double scale
Find third proportional to 324,117 and 490,646
Similar ratio
Find third proportional to 486,172.50 and 735,964.50
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.