Home / 299,808-638,457

Finding the Third Proportional to 299,808 and 638,457

Calculator

Solution

The third proportional to 299,808 and 638,457 is: 1,359,627.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,808 : 638,457 = 638,457 : x
  2. Step 2: Convert to fraction form
    299,808/638,457 = 638,457/x
  3. Step 3: Cross multiply
    299,808x = 638,457 × 638,457
  4. Step 4: Simplify right side
    299,808x = 407,627,340,849
  5. Step 5: Solve for x
    x = 407,627,340,849/299,808
  6. Step 6: Final answer
    x = 1,359,627.96

Related Problems

Find third proportional to 149,904 and 319,228.50
Half scale
Find third proportional to 599,616 and 1,276,914
Double scale
Find third proportional to 299,810 and 638,461
Similar ratio
Find third proportional to 449,712 and 957,685.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.