Home / 409,280-838,236

Finding the Third Proportional to 409,280 and 838,236

Calculator

Solution

The third proportional to 409,280 and 838,236 is: 1,716,769.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,280 : 838,236 = 838,236 : x
  2. Step 2: Convert to fraction form
    409,280/838,236 = 838,236/x
  3. Step 3: Cross multiply
    409,280x = 838,236 × 838,236
  4. Step 4: Simplify right side
    409,280x = 702,639,591,696
  5. Step 5: Solve for x
    x = 702,639,591,696/409,280
  6. Step 6: Final answer
    x = 1,716,769.92

Related Problems

Find third proportional to 204,640 and 419,118
Half scale
Find third proportional to 818,560 and 1,676,472
Double scale
Find third proportional to 409,282 and 838,240
Similar ratio
Find third proportional to 613,920 and 1,257,354
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.