Home / 280,988-430,869

Finding the Third Proportional to 280,988 and 430,869

Calculator

Solution

The third proportional to 280,988 and 430,869 is: 660,697.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,988 : 430,869 = 430,869 : x
  2. Step 2: Convert to fraction form
    280,988/430,869 = 430,869/x
  3. Step 3: Cross multiply
    280,988x = 430,869 × 430,869
  4. Step 4: Simplify right side
    280,988x = 185,648,095,161
  5. Step 5: Solve for x
    x = 185,648,095,161/280,988
  6. Step 6: Final answer
    x = 660,697.59

Related Problems

Find third proportional to 140,494 and 215,434.50
Half scale
Find third proportional to 561,976 and 861,738
Double scale
Find third proportional to 280,990 and 430,872
Similar ratio
Find third proportional to 421,482 and 646,303.50
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.