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Finding the Fourth Proportional to 399,655.80, 599,483.70 and 336,670.20

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Solution

The fourth proportional to 399,655.80, 599,483.70 and 336,670.20 is: 505,005.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,655.80 : 599,483.70 = 336,670.20 : x
  2. Step 2: Convert to fraction form
    399,655.80/599,483.70 = 336,670.20/x
  3. Step 3: Cross multiply
    399,655.80x = 599,483.70 × 336,670.20
  4. Step 4: Simplify right side
    399,655.80x = 201,828,297,175.74
  5. Step 5: Solve for x
    x = 201,828,297,175.74/399,655.80
  6. Step 6: Final answer
    x = 505,005.30

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