Home / 288,290-439,543

Finding the Third Proportional to 288,290 and 439,543

Calculator

Solution

The third proportional to 288,290 and 439,543 is: 670,151.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,290 : 439,543 = 439,543 : x
  2. Step 2: Convert to fraction form
    288,290/439,543 = 439,543/x
  3. Step 3: Cross multiply
    288,290x = 439,543 × 439,543
  4. Step 4: Simplify right side
    288,290x = 193,198,048,849
  5. Step 5: Solve for x
    x = 193,198,048,849/288,290
  6. Step 6: Final answer
    x = 670,151.75

Related Problems

Find third proportional to 144,145 and 219,771.50
Half scale
Find third proportional to 576,580 and 879,086
Double scale
Find third proportional to 288,292 and 439,546
Similar ratio
Find third proportional to 432,435 and 659,314.50
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.