Home / 439,218-642,072

Finding the Third Proportional to 439,218 and 642,072

Calculator

Solution

The third proportional to 439,218 and 642,072 is: 938,614.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,218 : 642,072 = 642,072 : x
  2. Step 2: Convert to fraction form
    439,218/642,072 = 642,072/x
  3. Step 3: Cross multiply
    439,218x = 642,072 × 642,072
  4. Step 4: Simplify right side
    439,218x = 412,256,453,184
  5. Step 5: Solve for x
    x = 412,256,453,184/439,218
  6. Step 6: Final answer
    x = 938,614.66

Related Problems

Find third proportional to 219,609 and 321,036
Half scale
Find third proportional to 878,436 and 1,284,144
Double scale
Find third proportional to 439,220 and 642,075
Similar ratio
Find third proportional to 658,827 and 963,108
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.