Home / 298,368-644,391

Finding the Third Proportional to 298,368 and 644,391

Calculator

Solution

The third proportional to 298,368 and 644,391 is: 1,391,703.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,368 : 644,391 = 644,391 : x
  2. Step 2: Convert to fraction form
    298,368/644,391 = 644,391/x
  3. Step 3: Cross multiply
    298,368x = 644,391 × 644,391
  4. Step 4: Simplify right side
    298,368x = 415,239,760,881
  5. Step 5: Solve for x
    x = 415,239,760,881/298,368
  6. Step 6: Final answer
    x = 1,391,703.40

Related Problems

Find third proportional to 149,184 and 322,195.50
Half scale
Find third proportional to 596,736 and 1,288,782
Double scale
Find third proportional to 298,370 and 644,395
Similar ratio
Find third proportional to 447,552 and 966,586.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.