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Finding the Fourth Proportional to 420,730.60, 629,867.10 and 376,493.80

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Solution

The fourth proportional to 420,730.60, 629,867.10 and 376,493.80 is: 563,641.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,730.60 : 629,867.10 = 376,493.80 : x
  2. Step 2: Convert to fraction form
    420,730.60/629,867.10 = 376,493.80/x
  3. Step 3: Cross multiply
    420,730.60x = 629,867.10 × 376,493.80
  4. Step 4: Simplify right side
    420,730.60x = 237,141,057,973.98
  5. Step 5: Solve for x
    x = 237,141,057,973.98/420,730.60
  6. Step 6: Final answer
    x = 563,641.10

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