Home / 318,912-493,488

Finding the Third Proportional to 318,912 and 493,488

Calculator

Solution

The third proportional to 318,912 and 493,488 is: 763,628.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,912 : 493,488 = 493,488 : x
  2. Step 2: Convert to fraction form
    318,912/493,488 = 493,488/x
  3. Step 3: Cross multiply
    318,912x = 493,488 × 493,488
  4. Step 4: Simplify right side
    318,912x = 243,530,406,144
  5. Step 5: Solve for x
    x = 243,530,406,144/318,912
  6. Step 6: Final answer
    x = 763,628.86

Related Problems

Find third proportional to 159,456 and 246,744
Half scale
Find third proportional to 637,824 and 986,976
Double scale
Find third proportional to 318,914 and 493,491
Similar ratio
Find third proportional to 478,368 and 740,232
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.