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Finding the Fourth Proportional to 645,946.88, 891,446 and 359,466.96

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Solution

The fourth proportional to 645,946.88, 891,446 and 359,466.96 is: 496,086.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,946.88 : 891,446 = 359,466.96 : x
  2. Step 2: Convert to fraction form
    645,946.88/891,446 = 359,466.96/x
  3. Step 3: Cross multiply
    645,946.88x = 891,446 × 359,466.96
  4. Step 4: Simplify right side
    645,946.88x = 320,445,383,624.16
  5. Step 5: Solve for x
    x = 320,445,383,624.16/645,946.88
  6. Step 6: Final answer
    x = 496,086.28

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