Home / 402,578-822,636

Finding the Third Proportional to 402,578 and 822,636

Calculator

Solution

The third proportional to 402,578 and 822,636 is: 1,680,990.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,578 : 822,636 = 822,636 : x
  2. Step 2: Convert to fraction form
    402,578/822,636 = 822,636/x
  3. Step 3: Cross multiply
    402,578x = 822,636 × 822,636
  4. Step 4: Simplify right side
    402,578x = 676,729,988,496
  5. Step 5: Solve for x
    x = 676,729,988,496/402,578
  6. Step 6: Final answer
    x = 1,680,990.98

Related Problems

Find third proportional to 201,289 and 411,318
Half scale
Find third proportional to 805,156 and 1,645,272
Double scale
Find third proportional to 402,580 and 822,640
Similar ratio
Find third proportional to 603,867 and 1,233,954
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.