Home / 8,642,379-18,879,324

Finding the Third Proportional to 8,642,379 and 18,879,324

Calculator

Solution

The third proportional to 8,642,379 and 18,879,324 is: 41,241,986.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,642,379 : 18,879,324 = 18,879,324 : x
  2. Step 2: Convert to fraction form
    8,642,379/18,879,324 = 18,879,324/x
  3. Step 3: Cross multiply
    8,642,379x = 18,879,324 × 18,879,324
  4. Step 4: Simplify right side
    8,642,379x = 356,428,874,696,976
  5. Step 5: Solve for x
    x = 356,428,874,696,976/8,642,379
  6. Step 6: Final answer
    x = 41,241,986.11

Related Problems

Find third proportional to 4,321,189.50 and 9,439,662
Half scale
Find third proportional to 17,284,758 and 37,758,648
Double scale
Find third proportional to 8,642,381 and 18,879,328
Similar ratio
Find third proportional to 12,963,568.50 and 28,318,986
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.