Home / 289,919.50-438,889.63

Finding the Third Proportional to 289,919.50 and 438,889.63

Calculator

Solution

The third proportional to 289,919.50 and 438,889.63 is: 664,405.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,919.50 : 438,889.63 = 438,889.63 : x
  2. Step 2: Convert to fraction form
    289,919.50/438,889.63 = 438,889.63/x
  3. Step 3: Cross multiply
    289,919.50x = 438,889.63 × 438,889.63
  4. Step 4: Simplify right side
    289,919.50x = 192,624,102,932.64
  5. Step 5: Solve for x
    x = 192,624,102,932.64/289,919.50
  6. Step 6: Final answer
    x = 664,405.47

Related Problems

Find third proportional to 144,959.75 and 219,444.81
Half scale
Find third proportional to 579,839 and 877,779.25
Double scale
Find third proportional to 289,922 and 438,893
Similar ratio
Find third proportional to 434,879.25 and 658,334.44
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.