Home / 399,464-561,877

Finding the Third Proportional to 399,464 and 561,877

Calculator

Solution

The third proportional to 399,464 and 561,877 is: 790,323.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,464 : 561,877 = 561,877 : x
  2. Step 2: Convert to fraction form
    399,464/561,877 = 561,877/x
  3. Step 3: Cross multiply
    399,464x = 561,877 × 561,877
  4. Step 4: Simplify right side
    399,464x = 315,705,763,129
  5. Step 5: Solve for x
    x = 315,705,763,129/399,464
  6. Step 6: Final answer
    x = 790,323.44

Related Problems

Find third proportional to 199,732 and 280,938.50
Half scale
Find third proportional to 798,928 and 1,123,754
Double scale
Find third proportional to 399,466 and 561,880
Similar ratio
Find third proportional to 599,196 and 842,815.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.