Home / 425,739-640,386

Finding the Third Proportional to 425,739 and 640,386

Calculator

Solution

The third proportional to 425,739 and 640,386 is: 963,252.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,739 : 640,386 = 640,386 : x
  2. Step 2: Convert to fraction form
    425,739/640,386 = 640,386/x
  3. Step 3: Cross multiply
    425,739x = 640,386 × 640,386
  4. Step 4: Simplify right side
    425,739x = 410,094,228,996
  5. Step 5: Solve for x
    x = 410,094,228,996/425,739
  6. Step 6: Final answer
    x = 963,252.67

Related Problems

Find third proportional to 212,869.50 and 320,193
Half scale
Find third proportional to 851,478 and 1,280,772
Double scale
Find third proportional to 425,741 and 640,389
Similar ratio
Find third proportional to 638,608.50 and 960,579
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.