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Finding the Fourth Proportional to 745,433.12, 1,118,035.08 and 408,640.64

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Solution

The fourth proportional to 745,433.12, 1,118,035.08 and 408,640.64 is: 612,898.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,433.12 : 1,118,035.08 = 408,640.64 : x
  2. Step 2: Convert to fraction form
    745,433.12/1,118,035.08 = 408,640.64/x
  3. Step 3: Cross multiply
    745,433.12x = 1,118,035.08 × 408,640.64
  4. Step 4: Simplify right side
    745,433.12x = 456,874,570,633.65
  5. Step 5: Solve for x
    x = 456,874,570,633.65/745,433.12
  6. Step 6: Final answer
    x = 612,898.14

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