Home / 393,660-626,688

Finding the Third Proportional to 393,660 and 626,688

Calculator

Solution

The third proportional to 393,660 and 626,688 is: 997,657.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,660 : 626,688 = 626,688 : x
  2. Step 2: Convert to fraction form
    393,660/626,688 = 626,688/x
  3. Step 3: Cross multiply
    393,660x = 626,688 × 626,688
  4. Step 4: Simplify right side
    393,660x = 392,737,849,344
  5. Step 5: Solve for x
    x = 392,737,849,344/393,660
  6. Step 6: Final answer
    x = 997,657.49

Related Problems

Find third proportional to 196,830 and 313,344
Half scale
Find third proportional to 787,320 and 1,253,376
Double scale
Find third proportional to 393,662 and 626,691
Similar ratio
Find third proportional to 590,490 and 940,032
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.