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Finding the Fourth Proportional to 665,482.07, 918,808.70 and 393,637.29

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Solution

The fourth proportional to 665,482.07, 918,808.70 and 393,637.29 is: 543,481.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,482.07 : 918,808.70 = 393,637.29 : x
  2. Step 2: Convert to fraction form
    665,482.07/918,808.70 = 393,637.29/x
  3. Step 3: Cross multiply
    665,482.07x = 918,808.70 × 393,637.29
  4. Step 4: Simplify right side
    665,482.07x = 361,677,364,728.24
  5. Step 5: Solve for x
    x = 361,677,364,728.24/665,482.07
  6. Step 6: Final answer
    x = 543,481.76

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