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Finding the Fourth Proportional to 1,319,007.90, 1,978,123.05 and 520,023.90

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Solution

The fourth proportional to 1,319,007.90, 1,978,123.05 and 520,023.90 is: 779,882.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,007.90 : 1,978,123.05 = 520,023.90 : x
  2. Step 2: Convert to fraction form
    1,319,007.90/1,978,123.05 = 520,023.90/x
  3. Step 3: Cross multiply
    1,319,007.90x = 1,978,123.05 × 520,023.90
  4. Step 4: Simplify right side
    1,319,007.90x = 1,028,671,263,140.90
  5. Step 5: Solve for x
    x = 1,028,671,263,140.90/1,319,007.90
  6. Step 6: Final answer
    x = 779,882.56

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