Home / 393,840-802,124

Finding the Third Proportional to 393,840 and 802,124

Calculator

Solution

The third proportional to 393,840 and 802,124 is: 1,633,665.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,840 : 802,124 = 802,124 : x
  2. Step 2: Convert to fraction form
    393,840/802,124 = 802,124/x
  3. Step 3: Cross multiply
    393,840x = 802,124 × 802,124
  4. Step 4: Simplify right side
    393,840x = 643,402,911,376
  5. Step 5: Solve for x
    x = 643,402,911,376/393,840
  6. Step 6: Final answer
    x = 1,633,665.73

Related Problems

Find third proportional to 196,920 and 401,062
Half scale
Find third proportional to 787,680 and 1,604,248
Double scale
Find third proportional to 393,842 and 802,128
Similar ratio
Find third proportional to 590,760 and 1,203,186
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.