Home / 309,762-455,570

Finding the Third Proportional to 309,762 and 455,570

Calculator

Solution

The third proportional to 309,762 and 455,570 is: 670,011.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,762 : 455,570 = 455,570 : x
  2. Step 2: Convert to fraction form
    309,762/455,570 = 455,570/x
  3. Step 3: Cross multiply
    309,762x = 455,570 × 455,570
  4. Step 4: Simplify right side
    309,762x = 207,544,024,900
  5. Step 5: Solve for x
    x = 207,544,024,900/309,762
  6. Step 6: Final answer
    x = 670,011.25

Related Problems

Find third proportional to 154,881 and 227,785
Half scale
Find third proportional to 619,524 and 911,140
Double scale
Find third proportional to 309,764 and 455,573
Similar ratio
Find third proportional to 464,643 and 683,355
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.