Home / 398,644-617,892

Finding the Third Proportional to 398,644 and 617,892

Calculator

Solution

The third proportional to 398,644 and 617,892 is: 957,722.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,644 : 617,892 = 617,892 : x
  2. Step 2: Convert to fraction form
    398,644/617,892 = 617,892/x
  3. Step 3: Cross multiply
    398,644x = 617,892 × 617,892
  4. Step 4: Simplify right side
    398,644x = 381,790,523,664
  5. Step 5: Solve for x
    x = 381,790,523,664/398,644
  6. Step 6: Final answer
    x = 957,722.99

Related Problems

Find third proportional to 199,322 and 308,946
Half scale
Find third proportional to 797,288 and 1,235,784
Double scale
Find third proportional to 398,646 and 617,895
Similar ratio
Find third proportional to 597,966 and 926,838
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.