Home / 309,764-455,574

Finding the Third Proportional to 309,764 and 455,574

Calculator

Solution

The third proportional to 309,764 and 455,574 is: 670,018.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,764 : 455,574 = 455,574 : x
  2. Step 2: Convert to fraction form
    309,764/455,574 = 455,574/x
  3. Step 3: Cross multiply
    309,764x = 455,574 × 455,574
  4. Step 4: Simplify right side
    309,764x = 207,547,669,476
  5. Step 5: Solve for x
    x = 207,547,669,476/309,764
  6. Step 6: Final answer
    x = 670,018.69

Related Problems

Find third proportional to 154,882 and 227,787
Half scale
Find third proportional to 619,528 and 911,148
Double scale
Find third proportional to 309,766 and 455,577
Similar ratio
Find third proportional to 464,646 and 683,361
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.