Home / 280,308-440,550

Finding the Third Proportional to 280,308 and 440,550

Calculator

Solution

The third proportional to 280,308 and 440,550 is: 692,396.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,308 : 440,550 = 440,550 : x
  2. Step 2: Convert to fraction form
    280,308/440,550 = 440,550/x
  3. Step 3: Cross multiply
    280,308x = 440,550 × 440,550
  4. Step 4: Simplify right side
    280,308x = 194,084,302,500
  5. Step 5: Solve for x
    x = 194,084,302,500/280,308
  6. Step 6: Final answer
    x = 692,396.59

Related Problems

Find third proportional to 140,154 and 220,275
Half scale
Find third proportional to 560,616 and 881,100
Double scale
Find third proportional to 280,310 and 440,553
Similar ratio
Find third proportional to 420,462 and 660,825
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.