Home / 318,600-487,944

Finding the Third Proportional to 318,600 and 487,944

Calculator

Solution

The third proportional to 318,600 and 487,944 is: 747,298.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,600 : 487,944 = 487,944 : x
  2. Step 2: Convert to fraction form
    318,600/487,944 = 487,944/x
  3. Step 3: Cross multiply
    318,600x = 487,944 × 487,944
  4. Step 4: Simplify right side
    318,600x = 238,089,347,136
  5. Step 5: Solve for x
    x = 238,089,347,136/318,600
  6. Step 6: Final answer
    x = 747,298.64

Related Problems

Find third proportional to 159,300 and 243,972
Half scale
Find third proportional to 637,200 and 975,888
Double scale
Find third proportional to 318,602 and 487,947
Similar ratio
Find third proportional to 477,900 and 731,916
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.