Home / 287,478-625,212

Finding the Third Proportional to 287,478 and 625,212

Calculator

Solution

The third proportional to 287,478 and 625,212 is: 1,359,721.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,478 : 625,212 = 625,212 : x
  2. Step 2: Convert to fraction form
    287,478/625,212 = 625,212/x
  3. Step 3: Cross multiply
    287,478x = 625,212 × 625,212
  4. Step 4: Simplify right side
    287,478x = 390,890,044,944
  5. Step 5: Solve for x
    x = 390,890,044,944/287,478
  6. Step 6: Final answer
    x = 1,359,721.60

Related Problems

Find third proportional to 143,739 and 312,606
Half scale
Find third proportional to 574,956 and 1,250,424
Double scale
Find third proportional to 287,480 and 625,216
Similar ratio
Find third proportional to 431,217 and 937,818
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.