Home / 488,510-697,287

Finding the Third Proportional to 488,510 and 697,287

Calculator

Solution

The third proportional to 488,510 and 697,287 is: 995,290.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,510 : 697,287 = 697,287 : x
  2. Step 2: Convert to fraction form
    488,510/697,287 = 697,287/x
  3. Step 3: Cross multiply
    488,510x = 697,287 × 697,287
  4. Step 4: Simplify right side
    488,510x = 486,209,160,369
  5. Step 5: Solve for x
    x = 486,209,160,369/488,510
  6. Step 6: Final answer
    x = 995,290.09

Related Problems

Find third proportional to 244,255 and 348,643.50
Half scale
Find third proportional to 977,020 and 1,394,574
Double scale
Find third proportional to 488,512 and 697,290
Similar ratio
Find third proportional to 732,765 and 1,045,930.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.