Home / 399,410-869,350

Finding the Third Proportional to 399,410 and 869,350

Calculator

Solution

The third proportional to 399,410 and 869,350 is: 1,892,214.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,410 : 869,350 = 869,350 : x
  2. Step 2: Convert to fraction form
    399,410/869,350 = 869,350/x
  3. Step 3: Cross multiply
    399,410x = 869,350 × 869,350
  4. Step 4: Simplify right side
    399,410x = 755,769,422,500
  5. Step 5: Solve for x
    x = 755,769,422,500/399,410
  6. Step 6: Final answer
    x = 1,892,214.57

Related Problems

Find third proportional to 199,705 and 434,675
Half scale
Find third proportional to 798,820 and 1,738,700
Double scale
Find third proportional to 399,412 and 869,354
Similar ratio
Find third proportional to 599,115 and 1,304,025
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.