Home / 809,735.60-1,215,478.20-455,441.60

Finding the Fourth Proportional to 809,735.60, 1,215,478.20 and 455,441.60

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Solution

The fourth proportional to 809,735.60, 1,215,478.20 and 455,441.60 is: 683,654.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,735.60 : 1,215,478.20 = 455,441.60 : x
  2. Step 2: Convert to fraction form
    809,735.60/1,215,478.20 = 455,441.60/x
  3. Step 3: Cross multiply
    809,735.60x = 1,215,478.20 × 455,441.60
  4. Step 4: Simplify right side
    809,735.60x = 553,579,336,173.12
  5. Step 5: Solve for x
    x = 553,579,336,173.12/809,735.60
  6. Step 6: Final answer
    x = 683,654.44

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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.