Home / 178,979-389,559

Finding the Third Proportional to 178,979 and 389,559

Calculator

Solution

The third proportional to 178,979 and 389,559 is: 847,899.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,979 : 389,559 = 389,559 : x
  2. Step 2: Convert to fraction form
    178,979/389,559 = 389,559/x
  3. Step 3: Cross multiply
    178,979x = 389,559 × 389,559
  4. Step 4: Simplify right side
    178,979x = 151,756,214,481
  5. Step 5: Solve for x
    x = 151,756,214,481/178,979
  6. Step 6: Final answer
    x = 847,899.56

Related Problems

Find third proportional to 89,489.50 and 194,779.50
Half scale
Find third proportional to 357,958 and 779,118
Double scale
Find third proportional to 178,981 and 389,563
Similar ratio
Find third proportional to 268,468.50 and 584,338.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.