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Finding the Fourth Proportional to 1,318,876.10, 1,978,832.55 and 520,021.70

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Solution

The fourth proportional to 1,318,876.10, 1,978,832.55 and 520,021.70 is: 780,236.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,876.10 : 1,978,832.55 = 520,021.70 : x
  2. Step 2: Convert to fraction form
    1,318,876.10/1,978,832.55 = 520,021.70/x
  3. Step 3: Cross multiply
    1,318,876.10x = 1,978,832.55 × 520,021.70
  4. Step 4: Simplify right side
    1,318,876.10x = 1,029,035,866,666.34
  5. Step 5: Solve for x
    x = 1,029,035,866,666.34/1,318,876.10
  6. Step 6: Final answer
    x = 780,236.95

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