Home / 420,714-905,580

Finding the Third Proportional to 420,714 and 905,580

Calculator

Solution

The third proportional to 420,714 and 905,580 is: 1,949,246.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,714 : 905,580 = 905,580 : x
  2. Step 2: Convert to fraction form
    420,714/905,580 = 905,580/x
  3. Step 3: Cross multiply
    420,714x = 905,580 × 905,580
  4. Step 4: Simplify right side
    420,714x = 820,075,136,400
  5. Step 5: Solve for x
    x = 820,075,136,400/420,714
  6. Step 6: Final answer
    x = 1,949,246.13

Related Problems

Find third proportional to 210,357 and 452,790
Half scale
Find third proportional to 841,428 and 1,811,160
Double scale
Find third proportional to 420,716 and 905,584
Similar ratio
Find third proportional to 631,071 and 1,358,370
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.