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Finding the Fourth Proportional to 429,521.40, 644,938.20 and 329,794.20

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Solution

The fourth proportional to 429,521.40, 644,938.20 and 329,794.20 is: 495,195.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,521.40 : 644,938.20 = 329,794.20 : x
  2. Step 2: Convert to fraction form
    429,521.40/644,938.20 = 329,794.20/x
  3. Step 3: Cross multiply
    429,521.40x = 644,938.20 × 329,794.20
  4. Step 4: Simplify right side
    429,521.40x = 212,696,877,718.44
  5. Step 5: Solve for x
    x = 212,696,877,718.44/429,521.40
  6. Step 6: Final answer
    x = 495,195.07

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