Home / 309,674-478,606

Finding the Third Proportional to 309,674 and 478,606

Calculator

Solution

The third proportional to 309,674 and 478,606 is: 739,693.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,674 : 478,606 = 478,606 : x
  2. Step 2: Convert to fraction form
    309,674/478,606 = 478,606/x
  3. Step 3: Cross multiply
    309,674x = 478,606 × 478,606
  4. Step 4: Simplify right side
    309,674x = 229,063,703,236
  5. Step 5: Solve for x
    x = 229,063,703,236/309,674
  6. Step 6: Final answer
    x = 739,693.04

Related Problems

Find third proportional to 154,837 and 239,303
Half scale
Find third proportional to 619,348 and 957,212
Double scale
Find third proportional to 309,676 and 478,609
Similar ratio
Find third proportional to 464,511 and 717,909
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.