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Finding the Fourth Proportional to 405,693.60, 608,540.40 and 405,693.60

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Solution

The fourth proportional to 405,693.60, 608,540.40 and 405,693.60 is: 608,540.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,693.60 : 608,540.40 = 405,693.60 : x
  2. Step 2: Convert to fraction form
    405,693.60/608,540.40 = 405,693.60/x
  3. Step 3: Cross multiply
    405,693.60x = 608,540.40 × 405,693.60
  4. Step 4: Simplify right side
    405,693.60x = 246,880,945,621.44
  5. Step 5: Solve for x
    x = 246,880,945,621.44/405,693.60
  6. Step 6: Final answer
    x = 608,540.40

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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.