Home / 287,043-628,806

Finding the Third Proportional to 287,043 and 628,806

Calculator

Solution

The third proportional to 287,043 and 628,806 is: 1,377,483.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,043 : 628,806 = 628,806 : x
  2. Step 2: Convert to fraction form
    287,043/628,806 = 628,806/x
  3. Step 3: Cross multiply
    287,043x = 628,806 × 628,806
  4. Step 4: Simplify right side
    287,043x = 395,396,985,636
  5. Step 5: Solve for x
    x = 395,396,985,636/287,043
  6. Step 6: Final answer
    x = 1,377,483.46

Related Problems

Find third proportional to 143,521.50 and 314,403
Half scale
Find third proportional to 574,086 and 1,257,612
Double scale
Find third proportional to 287,045 and 628,810
Similar ratio
Find third proportional to 430,564.50 and 943,209
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.