Home / 285,183-398,727

Finding the Third Proportional to 285,183 and 398,727

Calculator

Solution

The third proportional to 285,183 and 398,727 is: 557,477.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,183 : 398,727 = 398,727 : x
  2. Step 2: Convert to fraction form
    285,183/398,727 = 398,727/x
  3. Step 3: Cross multiply
    285,183x = 398,727 × 398,727
  4. Step 4: Simplify right side
    285,183x = 158,983,220,529
  5. Step 5: Solve for x
    x = 158,983,220,529/285,183
  6. Step 6: Final answer
    x = 557,477.90

Related Problems

Find third proportional to 142,591.50 and 199,363.50
Half scale
Find third proportional to 570,366 and 797,454
Double scale
Find third proportional to 285,185 and 398,730
Similar ratio
Find third proportional to 427,774.50 and 598,090.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.