Home / 438,688-911,824

Finding the Third Proportional to 438,688 and 911,824

Calculator

Solution

The third proportional to 438,688 and 911,824 is: 1,895,249.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,688 : 911,824 = 911,824 : x
  2. Step 2: Convert to fraction form
    438,688/911,824 = 911,824/x
  3. Step 3: Cross multiply
    438,688x = 911,824 × 911,824
  4. Step 4: Simplify right side
    438,688x = 831,423,006,976
  5. Step 5: Solve for x
    x = 831,423,006,976/438,688
  6. Step 6: Final answer
    x = 1,895,249.03

Related Problems

Find third proportional to 219,344 and 455,912
Half scale
Find third proportional to 877,376 and 1,823,648
Double scale
Find third proportional to 438,690 and 911,828
Similar ratio
Find third proportional to 658,032 and 1,367,736
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.