Home / 339,424-670,280

Finding the Third Proportional to 339,424 and 670,280

Calculator

Solution

The third proportional to 339,424 and 670,280 is: 1,323,640.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,424 : 670,280 = 670,280 : x
  2. Step 2: Convert to fraction form
    339,424/670,280 = 670,280/x
  3. Step 3: Cross multiply
    339,424x = 670,280 × 670,280
  4. Step 4: Simplify right side
    339,424x = 449,275,278,400
  5. Step 5: Solve for x
    x = 449,275,278,400/339,424
  6. Step 6: Final answer
    x = 1,323,640.28

Related Problems

Find third proportional to 169,712 and 335,140
Half scale
Find third proportional to 678,848 and 1,340,560
Double scale
Find third proportional to 339,426 and 670,284
Similar ratio
Find third proportional to 509,136 and 1,005,420
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.