Home / 356,823-553,356

Finding the Third Proportional to 356,823 and 553,356

Calculator

Solution

The third proportional to 356,823 and 553,356 is: 858,136.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,823 : 553,356 = 553,356 : x
  2. Step 2: Convert to fraction form
    356,823/553,356 = 553,356/x
  3. Step 3: Cross multiply
    356,823x = 553,356 × 553,356
  4. Step 4: Simplify right side
    356,823x = 306,202,862,736
  5. Step 5: Solve for x
    x = 306,202,862,736/356,823
  6. Step 6: Final answer
    x = 858,136.56

Related Problems

Find third proportional to 178,411.50 and 276,678
Half scale
Find third proportional to 713,646 and 1,106,712
Double scale
Find third proportional to 356,825 and 553,359
Similar ratio
Find third proportional to 535,234.50 and 830,034
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.