Home / 280,858-430,674

Finding the Third Proportional to 280,858 and 430,674

Calculator

Solution

The third proportional to 280,858 and 430,674 is: 660,405.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,858 : 430,674 = 430,674 : x
  2. Step 2: Convert to fraction form
    280,858/430,674 = 430,674/x
  3. Step 3: Cross multiply
    280,858x = 430,674 × 430,674
  4. Step 4: Simplify right side
    280,858x = 185,480,094,276
  5. Step 5: Solve for x
    x = 185,480,094,276/280,858
  6. Step 6: Final answer
    x = 660,405.24

Related Problems

Find third proportional to 140,429 and 215,337
Half scale
Find third proportional to 561,716 and 861,348
Double scale
Find third proportional to 280,860 and 430,677
Similar ratio
Find third proportional to 421,287 and 646,011
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.