Home / 312,669-636,378.50

Finding the Third Proportional to 312,669 and 636,378.50

Calculator

Solution

The third proportional to 312,669 and 636,378.50 is: 1,295,227.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,669 : 636,378.50 = 636,378.50 : x
  2. Step 2: Convert to fraction form
    312,669/636,378.50 = 636,378.50/x
  3. Step 3: Cross multiply
    312,669x = 636,378.50 × 636,378.50
  4. Step 4: Simplify right side
    312,669x = 404,977,595,262.25
  5. Step 5: Solve for x
    x = 404,977,595,262.25/312,669
  6. Step 6: Final answer
    x = 1,295,227.85

Related Problems

Find third proportional to 156,334.50 and 318,189.25
Half scale
Find third proportional to 625,338 and 1,272,757
Double scale
Find third proportional to 312,671 and 636,383
Similar ratio
Find third proportional to 469,003.50 and 954,567.75
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.