Home / 415,554-644,715

Finding the Third Proportional to 415,554 and 644,715

Calculator

Solution

The third proportional to 415,554 and 644,715 is: 1,000,248.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,554 : 644,715 = 644,715 : x
  2. Step 2: Convert to fraction form
    415,554/644,715 = 644,715/x
  3. Step 3: Cross multiply
    415,554x = 644,715 × 644,715
  4. Step 4: Simplify right side
    415,554x = 415,657,431,225
  5. Step 5: Solve for x
    x = 415,657,431,225/415,554
  6. Step 6: Final answer
    x = 1,000,248.90

Related Problems

Find third proportional to 207,777 and 322,357.50
Half scale
Find third proportional to 831,108 and 1,289,430
Double scale
Find third proportional to 415,556 and 644,718
Similar ratio
Find third proportional to 623,331 and 967,072.50
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.