Home / 308,516-641,656

Finding the Third Proportional to 308,516 and 641,656

Calculator

Solution

The third proportional to 308,516 and 641,656 is: 1,334,525.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,516 : 641,656 = 641,656 : x
  2. Step 2: Convert to fraction form
    308,516/641,656 = 641,656/x
  3. Step 3: Cross multiply
    308,516x = 641,656 × 641,656
  4. Step 4: Simplify right side
    308,516x = 411,722,422,336
  5. Step 5: Solve for x
    x = 411,722,422,336/308,516
  6. Step 6: Final answer
    x = 1,334,525.35

Related Problems

Find third proportional to 154,258 and 320,828
Half scale
Find third proportional to 617,032 and 1,283,312
Double scale
Find third proportional to 308,518 and 641,660
Similar ratio
Find third proportional to 462,774 and 962,484
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.