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Finding the Fourth Proportional to 519,246.90, 778,870.35 and 318,917.70

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Solution

The fourth proportional to 519,246.90, 778,870.35 and 318,917.70 is: 478,376.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,246.90 : 778,870.35 = 318,917.70 : x
  2. Step 2: Convert to fraction form
    519,246.90/778,870.35 = 318,917.70/x
  3. Step 3: Cross multiply
    519,246.90x = 778,870.35 × 318,917.70
  4. Step 4: Simplify right side
    519,246.90x = 248,395,540,620.20
  5. Step 5: Solve for x
    x = 248,395,540,620.20/519,246.90
  6. Step 6: Final answer
    x = 478,376.55

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