Home / 420,806-651,891

Finding the Third Proportional to 420,806 and 651,891

Calculator

Solution

The third proportional to 420,806 and 651,891 is: 1,009,875.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,806 : 651,891 = 651,891 : x
  2. Step 2: Convert to fraction form
    420,806/651,891 = 651,891/x
  3. Step 3: Cross multiply
    420,806x = 651,891 × 651,891
  4. Step 4: Simplify right side
    420,806x = 424,961,875,881
  5. Step 5: Solve for x
    x = 424,961,875,881/420,806
  6. Step 6: Final answer
    x = 1,009,875.99

Related Problems

Find third proportional to 210,403 and 325,945.50
Half scale
Find third proportional to 841,612 and 1,303,782
Double scale
Find third proportional to 420,808 and 651,894
Similar ratio
Find third proportional to 631,209 and 977,836.50
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.