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Finding the Fourth Proportional to 393,985,754.60, 590,978,631.90 and 212,587,226.60

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Solution

The fourth proportional to 393,985,754.60, 590,978,631.90 and 212,587,226.60 is: 318,880,839.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,985,754.60 : 590,978,631.90 = 212,587,226.60 : x
  2. Step 2: Convert to fraction form
    393,985,754.60/590,978,631.90 = 212,587,226.60/x
  3. Step 3: Cross multiply
    393,985,754.60x = 590,978,631.90 × 212,587,226.60
  4. Step 4: Simplify right side
    393,985,754.60x = 125,634,508,335,483,280
  5. Step 5: Solve for x
    x = 125,634,508,335,483,280/393,985,754.60
  6. Step 6: Final answer
    x = 318,880,839.90

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Why These Related Problems?

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