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Finding the Fourth Proportional to 519,315.90, 778,973.85 and 342,023.10

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Solution

The fourth proportional to 519,315.90, 778,973.85 and 342,023.10 is: 513,034.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,315.90 : 778,973.85 = 342,023.10 : x
  2. Step 2: Convert to fraction form
    519,315.90/778,973.85 = 342,023.10/x
  3. Step 3: Cross multiply
    519,315.90x = 778,973.85 × 342,023.10
  4. Step 4: Simplify right side
    519,315.90x = 266,427,050,995.94
  5. Step 5: Solve for x
    x = 266,427,050,995.94/519,315.90
  6. Step 6: Final answer
    x = 513,034.65

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