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Finding the Fourth Proportional to 630,157.72, 869,583 and 358,187.80

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Solution

The fourth proportional to 630,157.72, 869,583 and 358,187.80 is: 494,279.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,157.72 : 869,583 = 358,187.80 : x
  2. Step 2: Convert to fraction form
    630,157.72/869,583 = 358,187.80/x
  3. Step 3: Cross multiply
    630,157.72x = 869,583 × 358,187.80
  4. Step 4: Simplify right side
    630,157.72x = 311,474,021,687.40
  5. Step 5: Solve for x
    x = 311,474,021,687.40/630,157.72
  6. Step 6: Final answer
    x = 494,279.47

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