Home / 290,728-392,676

Finding the Third Proportional to 290,728 and 392,676

Calculator

Solution

The third proportional to 290,728 and 392,676 is: 530,373.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,728 : 392,676 = 392,676 : x
  2. Step 2: Convert to fraction form
    290,728/392,676 = 392,676/x
  3. Step 3: Cross multiply
    290,728x = 392,676 × 392,676
  4. Step 4: Simplify right side
    290,728x = 154,194,440,976
  5. Step 5: Solve for x
    x = 154,194,440,976/290,728
  6. Step 6: Final answer
    x = 530,373.55

Related Problems

Find third proportional to 145,364 and 196,338
Half scale
Find third proportional to 581,456 and 785,352
Double scale
Find third proportional to 290,730 and 392,679
Similar ratio
Find third proportional to 436,092 and 589,014
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.