Home / 809,724.40-1,214,932.20-388,783.60

Finding the Fourth Proportional to 809,724.40, 1,214,932.20 and 388,783.60

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Solution

The fourth proportional to 809,724.40, 1,214,932.20 and 388,783.60 is: 583,341.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,724.40 : 1,214,932.20 = 388,783.60 : x
  2. Step 2: Convert to fraction form
    809,724.40/1,214,932.20 = 388,783.60/x
  3. Step 3: Cross multiply
    809,724.40x = 1,214,932.20 × 388,783.60
  4. Step 4: Simplify right side
    809,724.40x = 472,345,714,471.92
  5. Step 5: Solve for x
    x = 472,345,714,471.92/809,724.40
  6. Step 6: Final answer
    x = 583,341.34

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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.