Home / 309,750-455,553

Finding the Third Proportional to 309,750 and 455,553

Calculator

Solution

The third proportional to 309,750 and 455,553 is: 669,987.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,750 : 455,553 = 455,553 : x
  2. Step 2: Convert to fraction form
    309,750/455,553 = 455,553/x
  3. Step 3: Cross multiply
    309,750x = 455,553 × 455,553
  4. Step 4: Simplify right side
    309,750x = 207,528,535,809
  5. Step 5: Solve for x
    x = 207,528,535,809/309,750
  6. Step 6: Final answer
    x = 669,987.20

Related Problems

Find third proportional to 154,875 and 227,776.50
Half scale
Find third proportional to 619,500 and 911,106
Double scale
Find third proportional to 309,752 and 455,556
Similar ratio
Find third proportional to 464,625 and 683,329.50
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.