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Finding the Fourth Proportional to 405,966.40, 607,783.20 and 248,502.40

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Solution

The fourth proportional to 405,966.40, 607,783.20 and 248,502.40 is: 372,039.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,966.40 : 607,783.20 = 248,502.40 : x
  2. Step 2: Convert to fraction form
    405,966.40/607,783.20 = 248,502.40/x
  3. Step 3: Cross multiply
    405,966.40x = 607,783.20 × 248,502.40
  4. Step 4: Simplify right side
    405,966.40x = 151,035,583,879.68
  5. Step 5: Solve for x
    x = 151,035,583,879.68/405,966.40
  6. Step 6: Final answer
    x = 372,039.62

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