Home / 313,592-689,611

Finding the Third Proportional to 313,592 and 689,611

Calculator

Solution

The third proportional to 313,592 and 689,611 is: 1,516,503.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,592 : 689,611 = 689,611 : x
  2. Step 2: Convert to fraction form
    313,592/689,611 = 689,611/x
  3. Step 3: Cross multiply
    313,592x = 689,611 × 689,611
  4. Step 4: Simplify right side
    313,592x = 475,563,331,321
  5. Step 5: Solve for x
    x = 475,563,331,321/313,592
  6. Step 6: Final answer
    x = 1,516,503.39

Related Problems

Find third proportional to 156,796 and 344,805.50
Half scale
Find third proportional to 627,184 and 1,379,222
Double scale
Find third proportional to 313,594 and 689,615
Similar ratio
Find third proportional to 470,388 and 1,034,416.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.