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Finding the Fourth Proportional to 403,588.68, 557,018.82 and 307,914.60

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Solution

The fourth proportional to 403,588.68, 557,018.82 and 307,914.60 is: 424,972.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,588.68 : 557,018.82 = 307,914.60 : x
  2. Step 2: Convert to fraction form
    403,588.68/557,018.82 = 307,914.60/x
  3. Step 3: Cross multiply
    403,588.68x = 557,018.82 × 307,914.60
  4. Step 4: Simplify right side
    403,588.68x = 171,514,227,152.77
  5. Step 5: Solve for x
    x = 171,514,227,152.77/403,588.68
  6. Step 6: Final answer
    x = 424,972.84

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