Home / 308,856-666,915

Finding the Third Proportional to 308,856 and 666,915

Calculator

Solution

The third proportional to 308,856 and 666,915 is: 1,440,074.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,856 : 666,915 = 666,915 : x
  2. Step 2: Convert to fraction form
    308,856/666,915 = 666,915/x
  3. Step 3: Cross multiply
    308,856x = 666,915 × 666,915
  4. Step 4: Simplify right side
    308,856x = 444,775,617,225
  5. Step 5: Solve for x
    x = 444,775,617,225/308,856
  6. Step 6: Final answer
    x = 1,440,074.39

Related Problems

Find third proportional to 154,428 and 333,457.50
Half scale
Find third proportional to 617,712 and 1,333,830
Double scale
Find third proportional to 308,858 and 666,919
Similar ratio
Find third proportional to 463,284 and 1,000,372.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.