Home / 289,871-400,536

Finding the Third Proportional to 289,871 and 400,536

Calculator

Solution

The third proportional to 289,871 and 400,536 is: 553,449.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,871 : 400,536 = 400,536 : x
  2. Step 2: Convert to fraction form
    289,871/400,536 = 400,536/x
  3. Step 3: Cross multiply
    289,871x = 400,536 × 400,536
  4. Step 4: Simplify right side
    289,871x = 160,429,087,296
  5. Step 5: Solve for x
    x = 160,429,087,296/289,871
  6. Step 6: Final answer
    x = 553,449.94

Related Problems

Find third proportional to 144,935.50 and 200,268
Half scale
Find third proportional to 579,742 and 801,072
Double scale
Find third proportional to 289,873 and 400,539
Similar ratio
Find third proportional to 434,806.50 and 600,804
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.