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Finding the Fourth Proportional to 326,064.40, 489,096.60 and 280,963.60

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Solution

The fourth proportional to 326,064.40, 489,096.60 and 280,963.60 is: 421,445.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,064.40 : 489,096.60 = 280,963.60 : x
  2. Step 2: Convert to fraction form
    326,064.40/489,096.60 = 280,963.60/x
  3. Step 3: Cross multiply
    326,064.40x = 489,096.60 × 280,963.60
  4. Step 4: Simplify right side
    326,064.40x = 137,418,341,483.76
  5. Step 5: Solve for x
    x = 137,418,341,483.76/326,064.40
  6. Step 6: Final answer
    x = 421,445.40

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