Home / 428,859-914,717

Finding the Third Proportional to 428,859 and 914,717

Calculator

Solution

The third proportional to 428,859 and 914,717 is: 1,951,007.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,859 : 914,717 = 914,717 : x
  2. Step 2: Convert to fraction form
    428,859/914,717 = 914,717/x
  3. Step 3: Cross multiply
    428,859x = 914,717 × 914,717
  4. Step 4: Simplify right side
    428,859x = 836,707,190,089
  5. Step 5: Solve for x
    x = 836,707,190,089/428,859
  6. Step 6: Final answer
    x = 1,951,007.65

Related Problems

Find third proportional to 214,429.50 and 457,358.50
Half scale
Find third proportional to 857,718 and 1,829,434
Double scale
Find third proportional to 428,861 and 914,721
Similar ratio
Find third proportional to 643,288.50 and 1,372,075.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.