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Finding the Fourth Proportional to 402,630.64, 555,684.18 and 259,805.92

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Solution

The fourth proportional to 402,630.64, 555,684.18 and 259,805.92 is: 358,566.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,630.64 : 555,684.18 = 259,805.92 : x
  2. Step 2: Convert to fraction form
    402,630.64/555,684.18 = 259,805.92/x
  3. Step 3: Cross multiply
    402,630.64x = 555,684.18 × 259,805.92
  4. Step 4: Simplify right side
    402,630.64x = 144,370,039,614.35
  5. Step 5: Solve for x
    x = 144,370,039,614.35/402,630.64
  6. Step 6: Final answer
    x = 358,566.95

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