Home / 387,507-851,397

Finding the Third Proportional to 387,507 and 851,397

Calculator

Solution

The third proportional to 387,507 and 851,397 is: 1,870,616.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,507 : 851,397 = 851,397 : x
  2. Step 2: Convert to fraction form
    387,507/851,397 = 851,397/x
  3. Step 3: Cross multiply
    387,507x = 851,397 × 851,397
  4. Step 4: Simplify right side
    387,507x = 724,876,851,609
  5. Step 5: Solve for x
    x = 724,876,851,609/387,507
  6. Step 6: Final answer
    x = 1,870,616.15

Related Problems

Find third proportional to 193,753.50 and 425,698.50
Half scale
Find third proportional to 775,014 and 1,702,794
Double scale
Find third proportional to 387,509 and 851,401
Similar ratio
Find third proportional to 581,260.50 and 1,277,095.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.