Home / 438,638-911,740

Finding the Third Proportional to 438,638 and 911,740

Calculator

Solution

The third proportional to 438,638 and 911,740 is: 1,895,115.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,638 : 911,740 = 911,740 : x
  2. Step 2: Convert to fraction form
    438,638/911,740 = 911,740/x
  3. Step 3: Cross multiply
    438,638x = 911,740 × 911,740
  4. Step 4: Simplify right side
    438,638x = 831,269,827,600
  5. Step 5: Solve for x
    x = 831,269,827,600/438,638
  6. Step 6: Final answer
    x = 1,895,115.85

Related Problems

Find third proportional to 219,319 and 455,870
Half scale
Find third proportional to 877,276 and 1,823,480
Double scale
Find third proportional to 438,640 and 911,744
Similar ratio
Find third proportional to 657,957 and 1,367,610
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.