Home / 296,169-639,621

Finding the Third Proportional to 296,169 and 639,621

Calculator

Solution

The third proportional to 296,169 and 639,621 is: 1,381,356.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,169 : 639,621 = 639,621 : x
  2. Step 2: Convert to fraction form
    296,169/639,621 = 639,621/x
  3. Step 3: Cross multiply
    296,169x = 639,621 × 639,621
  4. Step 4: Simplify right side
    296,169x = 409,115,023,641
  5. Step 5: Solve for x
    x = 409,115,023,641/296,169
  6. Step 6: Final answer
    x = 1,381,356.67

Related Problems

Find third proportional to 148,084.50 and 319,810.50
Half scale
Find third proportional to 592,338 and 1,279,242
Double scale
Find third proportional to 296,171 and 639,625
Similar ratio
Find third proportional to 444,253.50 and 959,431.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.