Home / 257,676-578,688

Finding the Third Proportional to 257,676 and 578,688

Calculator

Solution

The third proportional to 257,676 and 578,688 is: 1,299,615.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,676 : 578,688 = 578,688 : x
  2. Step 2: Convert to fraction form
    257,676/578,688 = 578,688/x
  3. Step 3: Cross multiply
    257,676x = 578,688 × 578,688
  4. Step 4: Simplify right side
    257,676x = 334,879,801,344
  5. Step 5: Solve for x
    x = 334,879,801,344/257,676
  6. Step 6: Final answer
    x = 1,299,615.80

Related Problems

Find third proportional to 128,838 and 289,344
Half scale
Find third proportional to 515,352 and 1,157,376
Double scale
Find third proportional to 257,678 and 578,692
Similar ratio
Find third proportional to 386,514 and 868,032
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.25) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.