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Finding the Fourth Proportional to 507,618.30, 761,429.16 and 128,538.85

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Solution

The fourth proportional to 507,618.30, 761,429.16 and 128,538.85 is: 192,808.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,618.30 : 761,429.16 = 128,538.85 : x
  2. Step 2: Convert to fraction form
    507,618.30/761,429.16 = 128,538.85/x
  3. Step 3: Cross multiply
    507,618.30x = 761,429.16 × 128,538.85
  4. Step 4: Simplify right side
    507,618.30x = 97,873,228,582.87
  5. Step 5: Solve for x
    x = 97,873,228,582.87/507,618.30
  6. Step 6: Final answer
    x = 192,808.71

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