Home / 290,909-617,032

Finding the Third Proportional to 290,909 and 617,032

Calculator

Solution

The third proportional to 290,909 and 617,032 is: 1,308,754.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,909 : 617,032 = 617,032 : x
  2. Step 2: Convert to fraction form
    290,909/617,032 = 617,032/x
  3. Step 3: Cross multiply
    290,909x = 617,032 × 617,032
  4. Step 4: Simplify right side
    290,909x = 380,728,489,024
  5. Step 5: Solve for x
    x = 380,728,489,024/290,909
  6. Step 6: Final answer
    x = 1,308,754.59

Related Problems

Find third proportional to 145,454.50 and 308,516
Half scale
Find third proportional to 581,818 and 1,234,064
Double scale
Find third proportional to 290,911 and 617,036
Similar ratio
Find third proportional to 436,363.50 and 925,548
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.