Home / 809,979.40-1,214,385.90-455,102.20

Finding the Fourth Proportional to 809,979.40, 1,214,385.90 and 455,102.20

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Solution

The fourth proportional to 809,979.40, 1,214,385.90 and 455,102.20 is: 682,325.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,979.40 : 1,214,385.90 = 455,102.20 : x
  2. Step 2: Convert to fraction form
    809,979.40/1,214,385.90 = 455,102.20/x
  3. Step 3: Cross multiply
    809,979.40x = 1,214,385.90 × 455,102.20
  4. Step 4: Simplify right side
    809,979.40x = 552,669,694,738.98
  5. Step 5: Solve for x
    x = 552,669,694,738.98/809,979.40
  6. Step 6: Final answer
    x = 682,325.62

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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.