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Finding the Fourth Proportional to 400,455.60, 599,808.60 and 311,007.30

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Solution

The fourth proportional to 400,455.60, 599,808.60 and 311,007.30 is: 465,831.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,455.60 : 599,808.60 = 311,007.30 : x
  2. Step 2: Convert to fraction form
    400,455.60/599,808.60 = 311,007.30/x
  3. Step 3: Cross multiply
    400,455.60x = 599,808.60 × 311,007.30
  4. Step 4: Simplify right side
    400,455.60x = 186,544,853,202.78
  5. Step 5: Solve for x
    x = 186,544,853,202.78/400,455.60
  6. Step 6: Final answer
    x = 465,831.55

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.