Home / 315,074-478,436

Finding the Third Proportional to 315,074 and 478,436

Calculator

Solution

The third proportional to 315,074 and 478,436 is: 726,499.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,074 : 478,436 = 478,436 : x
  2. Step 2: Convert to fraction form
    315,074/478,436 = 478,436/x
  3. Step 3: Cross multiply
    315,074x = 478,436 × 478,436
  4. Step 4: Simplify right side
    315,074x = 228,901,006,096
  5. Step 5: Solve for x
    x = 228,901,006,096/315,074
  6. Step 6: Final answer
    x = 726,499.19

Related Problems

Find third proportional to 157,537 and 239,218
Half scale
Find third proportional to 630,148 and 956,872
Double scale
Find third proportional to 315,076 and 478,439
Similar ratio
Find third proportional to 472,611 and 717,654
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.