Home / 436,323-640,120.50

Finding the Third Proportional to 436,323 and 640,120.50

Calculator

Solution

The third proportional to 436,323 and 640,120.50 is: 939,107.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,323 : 640,120.50 = 640,120.50 : x
  2. Step 2: Convert to fraction form
    436,323/640,120.50 = 640,120.50/x
  3. Step 3: Cross multiply
    436,323x = 640,120.50 × 640,120.50
  4. Step 4: Simplify right side
    436,323x = 409,754,254,520.25
  5. Step 5: Solve for x
    x = 409,754,254,520.25/436,323
  6. Step 6: Final answer
    x = 939,107.62

Related Problems

Find third proportional to 218,161.50 and 320,060.25
Half scale
Find third proportional to 872,646 and 1,280,241
Double scale
Find third proportional to 436,325 and 640,123
Similar ratio
Find third proportional to 654,484.50 and 960,180.75
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.