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Finding the Fourth Proportional to 495,311.02, 683,536.53 and 280,445.02

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Solution

The fourth proportional to 495,311.02, 683,536.53 and 280,445.02 is: 387,018.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,311.02 : 683,536.53 = 280,445.02 : x
  2. Step 2: Convert to fraction form
    495,311.02/683,536.53 = 280,445.02/x
  3. Step 3: Cross multiply
    495,311.02x = 683,536.53 × 280,445.02
  4. Step 4: Simplify right side
    495,311.02x = 191,694,415,826.58
  5. Step 5: Solve for x
    x = 191,694,415,826.58/495,311.02
  6. Step 6: Final answer
    x = 387,018.27

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