Home / 355,115-478,452

Finding the Third Proportional to 355,115 and 478,452

Calculator

Solution

The third proportional to 355,115 and 478,452 is: 644,625.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,115 : 478,452 = 478,452 : x
  2. Step 2: Convert to fraction form
    355,115/478,452 = 478,452/x
  3. Step 3: Cross multiply
    355,115x = 478,452 × 478,452
  4. Step 4: Simplify right side
    355,115x = 228,916,316,304
  5. Step 5: Solve for x
    x = 228,916,316,304/355,115
  6. Step 6: Final answer
    x = 644,625.87

Related Problems

Find third proportional to 177,557.50 and 239,226
Half scale
Find third proportional to 710,230 and 956,904
Double scale
Find third proportional to 355,117 and 478,455
Similar ratio
Find third proportional to 532,672.50 and 717,678
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.