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Finding the Fourth Proportional to 421,646.88, 631,770.48 and 342,798.24

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Solution

The fourth proportional to 421,646.88, 631,770.48 and 342,798.24 is: 513,628.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,646.88 : 631,770.48 = 342,798.24 : x
  2. Step 2: Convert to fraction form
    421,646.88/631,770.48 = 342,798.24/x
  3. Step 3: Cross multiply
    421,646.88x = 631,770.48 × 342,798.24
  4. Step 4: Simplify right side
    421,646.88x = 216,569,808,627.96
  5. Step 5: Solve for x
    x = 216,569,808,627.96/421,646.88
  6. Step 6: Final answer
    x = 513,628.39

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