Home / 298,806-647,396

Finding the Third Proportional to 298,806 and 647,396

Calculator

Solution

The third proportional to 298,806 and 647,396 is: 1,402,654.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,806 : 647,396 = 647,396 : x
  2. Step 2: Convert to fraction form
    298,806/647,396 = 647,396/x
  3. Step 3: Cross multiply
    298,806x = 647,396 × 647,396
  4. Step 4: Simplify right side
    298,806x = 419,121,580,816
  5. Step 5: Solve for x
    x = 419,121,580,816/298,806
  6. Step 6: Final answer
    x = 1,402,654.50

Related Problems

Find third proportional to 149,403 and 323,698
Half scale
Find third proportional to 597,612 and 1,294,792
Double scale
Find third proportional to 298,808 and 647,400
Similar ratio
Find third proportional to 448,209 and 971,094
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.