Home / 656,440-905,887.20-354,634

Finding the Fourth Proportional to 656,440, 905,887.20 and 354,634

Calculator

Solution

The fourth proportional to 656,440, 905,887.20 and 354,634 is: 489,394.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,440 : 905,887.20 = 354,634 : x
  2. Step 2: Convert to fraction form
    656,440/905,887.20 = 354,634/x
  3. Step 3: Cross multiply
    656,440x = 905,887.20 × 354,634
  4. Step 4: Simplify right side
    656,440x = 321,258,401,284.80
  5. Step 5: Solve for x
    x = 321,258,401,284.80/656,440
  6. Step 6: Final answer
    x = 489,394.92

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.