Home / 428,044-663,708

Finding the Third Proportional to 428,044 and 663,708

Calculator

Solution

The third proportional to 428,044 and 663,708 is: 1,029,119.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,044 : 663,708 = 663,708 : x
  2. Step 2: Convert to fraction form
    428,044/663,708 = 663,708/x
  3. Step 3: Cross multiply
    428,044x = 663,708 × 663,708
  4. Step 4: Simplify right side
    428,044x = 440,508,309,264
  5. Step 5: Solve for x
    x = 440,508,309,264/428,044
  6. Step 6: Final answer
    x = 1,029,119.22

Related Problems

Find third proportional to 214,022 and 331,854
Half scale
Find third proportional to 856,088 and 1,327,416
Double scale
Find third proportional to 428,046 and 663,711
Similar ratio
Find third proportional to 642,066 and 995,562
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.