Home / 490,502.60-685,129-490,502.60

Finding the Fourth Proportional to 490,502.60, 685,129 and 490,502.60

Calculator

Solution

The fourth proportional to 490,502.60, 685,129 and 490,502.60 is: 685,129

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,502.60 : 685,129 = 490,502.60 : x
  2. Step 2: Convert to fraction form
    490,502.60/685,129 = 490,502.60/x
  3. Step 3: Cross multiply
    490,502.60x = 685,129 × 490,502.60
  4. Step 4: Simplify right side
    490,502.60x = 336,057,555,835.40
  5. Step 5: Solve for x
    x = 336,057,555,835.40/490,502.60
  6. Step 6: Final answer
    x = 685,129

Related Problems

Find fourth proportional to 245,251.30, 342,564.50 and 245,251.30
Half scale
Find fourth proportional to 981,005.20, 1,370,258 and 981,005.20
Double scale
Find fourth proportional to 490,503.60, 685,130.40 and 490,503.60
Similar ratio
Find fourth proportional to 735,753.90, 1,027,693.50 and 735,753.90
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.