Home / 808,628.20-1,212,942.30-509,446.60

Finding the Fourth Proportional to 808,628.20, 1,212,942.30 and 509,446.60

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Solution

The fourth proportional to 808,628.20, 1,212,942.30 and 509,446.60 is: 764,169.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,628.20 : 1,212,942.30 = 509,446.60 : x
  2. Step 2: Convert to fraction form
    808,628.20/1,212,942.30 = 509,446.60/x
  3. Step 3: Cross multiply
    808,628.20x = 1,212,942.30 × 509,446.60
  4. Step 4: Simplify right side
    808,628.20x = 617,929,330,731.18
  5. Step 5: Solve for x
    x = 617,929,330,731.18/808,628.20
  6. Step 6: Final answer
    x = 764,169.90

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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.