Home / 318,752-686,684

Finding the Third Proportional to 318,752 and 686,684

Calculator

Solution

The third proportional to 318,752 and 686,684 is: 1,479,315.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,752 : 686,684 = 686,684 : x
  2. Step 2: Convert to fraction form
    318,752/686,684 = 686,684/x
  3. Step 3: Cross multiply
    318,752x = 686,684 × 686,684
  4. Step 4: Simplify right side
    318,752x = 471,534,915,856
  5. Step 5: Solve for x
    x = 471,534,915,856/318,752
  6. Step 6: Final answer
    x = 1,479,315.94

Related Problems

Find third proportional to 159,376 and 343,342
Half scale
Find third proportional to 637,504 and 1,373,368
Double scale
Find third proportional to 318,754 and 686,688
Similar ratio
Find third proportional to 478,128 and 1,030,026
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.