Home / 257,128-553,724

Finding the Third Proportional to 257,128 and 553,724

Calculator

Solution

The third proportional to 257,128 and 553,724 is: 1,192,442.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,128 : 553,724 = 553,724 : x
  2. Step 2: Convert to fraction form
    257,128/553,724 = 553,724/x
  3. Step 3: Cross multiply
    257,128x = 553,724 × 553,724
  4. Step 4: Simplify right side
    257,128x = 306,610,268,176
  5. Step 5: Solve for x
    x = 306,610,268,176/257,128
  6. Step 6: Final answer
    x = 1,192,442.16

Related Problems

Find third proportional to 128,564 and 276,862
Half scale
Find third proportional to 514,256 and 1,107,448
Double scale
Find third proportional to 257,130 and 553,728
Similar ratio
Find third proportional to 385,692 and 830,586
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.