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Finding the Fourth Proportional to 1,218,379, 1,681,129.74 and 788,599.48

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Solution

The fourth proportional to 1,218,379, 1,681,129.74 and 788,599.48 is: 1,088,116.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,379 : 1,681,129.74 = 788,599.48 : x
  2. Step 2: Convert to fraction form
    1,218,379/1,681,129.74 = 788,599.48/x
  3. Step 3: Cross multiply
    1,218,379x = 1,681,129.74 × 788,599.48
  4. Step 4: Simplify right side
    1,218,379x = 1,325,738,038,776.54
  5. Step 5: Solve for x
    x = 1,325,738,038,776.54/1,218,379
  6. Step 6: Final answer
    x = 1,088,116.29

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