Home / 301,644-638,280

Finding the Third Proportional to 301,644 and 638,280

Calculator

Solution

The third proportional to 301,644 and 638,280 is: 1,350,603.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,644 : 638,280 = 638,280 : x
  2. Step 2: Convert to fraction form
    301,644/638,280 = 638,280/x
  3. Step 3: Cross multiply
    301,644x = 638,280 × 638,280
  4. Step 4: Simplify right side
    301,644x = 407,401,358,400
  5. Step 5: Solve for x
    x = 407,401,358,400/301,644
  6. Step 6: Final answer
    x = 1,350,603.22

Related Problems

Find third proportional to 150,822 and 319,140
Half scale
Find third proportional to 603,288 and 1,276,560
Double scale
Find third proportional to 301,646 and 638,284
Similar ratio
Find third proportional to 452,466 and 957,420
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.