Home / 309,545-670,615

Finding the Third Proportional to 309,545 and 670,615

Calculator

Solution

The third proportional to 309,545 and 670,615 is: 1,452,856.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,545 : 670,615 = 670,615 : x
  2. Step 2: Convert to fraction form
    309,545/670,615 = 670,615/x
  3. Step 3: Cross multiply
    309,545x = 670,615 × 670,615
  4. Step 4: Simplify right side
    309,545x = 449,724,478,225
  5. Step 5: Solve for x
    x = 449,724,478,225/309,545
  6. Step 6: Final answer
    x = 1,452,856.54

Related Problems

Find third proportional to 154,772.50 and 335,307.50
Half scale
Find third proportional to 619,090 and 1,341,230
Double scale
Find third proportional to 309,547 and 670,619
Similar ratio
Find third proportional to 464,317.50 and 1,005,922.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.