Home / 290,360-435,540

Finding the Third Proportional to 290,360 and 435,540

Calculator

Solution

The third proportional to 290,360 and 435,540 is: 653,310

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,360 : 435,540 = 435,540 : x
  2. Step 2: Convert to fraction form
    290,360/435,540 = 435,540/x
  3. Step 3: Cross multiply
    290,360x = 435,540 × 435,540
  4. Step 4: Simplify right side
    290,360x = 189,695,091,600
  5. Step 5: Solve for x
    x = 189,695,091,600/290,360
  6. Step 6: Final answer
    x = 653,310

Related Problems

Find third proportional to 145,180 and 217,770
Half scale
Find third proportional to 580,720 and 871,080
Double scale
Find third proportional to 290,362 and 435,543
Similar ratio
Find third proportional to 435,540 and 653,310
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.