Home / 339,440-670,312

Finding the Third Proportional to 339,440 and 670,312

Calculator

Solution

The third proportional to 339,440 and 670,312 is: 1,323,704.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,440 : 670,312 = 670,312 : x
  2. Step 2: Convert to fraction form
    339,440/670,312 = 670,312/x
  3. Step 3: Cross multiply
    339,440x = 670,312 × 670,312
  4. Step 4: Simplify right side
    339,440x = 449,318,177,344
  5. Step 5: Solve for x
    x = 449,318,177,344/339,440
  6. Step 6: Final answer
    x = 1,323,704.27

Related Problems

Find third proportional to 169,720 and 335,156
Half scale
Find third proportional to 678,880 and 1,340,624
Double scale
Find third proportional to 339,442 and 670,316
Similar ratio
Find third proportional to 509,160 and 1,005,468
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.