Home / 639,507-1,381,480

Finding the Third Proportional to 639,507 and 1,381,480

Calculator

Solution

The third proportional to 639,507 and 1,381,480 is: 2,984,309.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,507 : 1,381,480 = 1,381,480 : x
  2. Step 2: Convert to fraction form
    639,507/1,381,480 = 1,381,480/x
  3. Step 3: Cross multiply
    639,507x = 1,381,480 × 1,381,480
  4. Step 4: Simplify right side
    639,507x = 1,908,486,990,400
  5. Step 5: Solve for x
    x = 1,908,486,990,400/639,507
  6. Step 6: Final answer
    x = 2,984,309.77

Related Problems

Find third proportional to 319,753.50 and 690,740
Half scale
Find third proportional to 1,279,014 and 2,762,960
Double scale
Find third proportional to 639,509 and 1,381,484
Similar ratio
Find third proportional to 959,260.50 and 2,072,220
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.