Home / 809,790.40-1,214,102.40-454,913.20

Finding the Fourth Proportional to 809,790.40, 1,214,102.40 and 454,913.20

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Solution

The fourth proportional to 809,790.40, 1,214,102.40 and 454,913.20 is: 682,042.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,790.40 : 1,214,102.40 = 454,913.20 : x
  2. Step 2: Convert to fraction form
    809,790.40/1,214,102.40 = 454,913.20/x
  3. Step 3: Cross multiply
    809,790.40x = 1,214,102.40 × 454,913.20
  4. Step 4: Simplify right side
    809,790.40x = 552,311,207,911.68
  5. Step 5: Solve for x
    x = 552,311,207,911.68/809,790.40
  6. Step 6: Final answer
    x = 682,042.18

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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.