Home / 398,178-616,599

Finding the Third Proportional to 398,178 and 616,599

Calculator

Solution

The third proportional to 398,178 and 616,599 is: 954,835.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,178 : 616,599 = 616,599 : x
  2. Step 2: Convert to fraction form
    398,178/616,599 = 616,599/x
  3. Step 3: Cross multiply
    398,178x = 616,599 × 616,599
  4. Step 4: Simplify right side
    398,178x = 380,194,326,801
  5. Step 5: Solve for x
    x = 380,194,326,801/398,178
  6. Step 6: Final answer
    x = 954,835.09

Related Problems

Find third proportional to 199,089 and 308,299.50
Half scale
Find third proportional to 796,356 and 1,233,198
Double scale
Find third proportional to 398,180 and 616,602
Similar ratio
Find third proportional to 597,267 and 924,898.50
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.