Home / 809,138.75-1,213,766.46-310,502.75

Finding the Fourth Proportional to 809,138.75, 1,213,766.46 and 310,502.75

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Solution

The fourth proportional to 809,138.75, 1,213,766.46 and 310,502.75 is: 465,776.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,138.75 : 1,213,766.46 = 310,502.75 : x
  2. Step 2: Convert to fraction form
    809,138.75/1,213,766.46 = 310,502.75/x
  3. Step 3: Cross multiply
    809,138.75x = 1,213,766.46 × 310,502.75
  4. Step 4: Simplify right side
    809,138.75x = 376,877,823,687.77
  5. Step 5: Solve for x
    x = 376,877,823,687.77/809,138.75
  6. Step 6: Final answer
    x = 465,776.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.