Home / 487,704-647,295

Finding the Third Proportional to 487,704 and 647,295

Calculator

Solution

The third proportional to 487,704 and 647,295 is: 859,108.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,704 : 647,295 = 647,295 : x
  2. Step 2: Convert to fraction form
    487,704/647,295 = 647,295/x
  3. Step 3: Cross multiply
    487,704x = 647,295 × 647,295
  4. Step 4: Simplify right side
    487,704x = 418,990,817,025
  5. Step 5: Solve for x
    x = 418,990,817,025/487,704
  6. Step 6: Final answer
    x = 859,108.84

Related Problems

Find third proportional to 243,852 and 323,647.50
Half scale
Find third proportional to 975,408 and 1,294,590
Double scale
Find third proportional to 487,706 and 647,298
Similar ratio
Find third proportional to 731,556 and 970,942.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.