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Finding the Fourth Proportional to 1,357,240,978.60, 2,035,861,467.90 and 668,493,442.60

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Solution

The fourth proportional to 1,357,240,978.60, 2,035,861,467.90 and 668,493,442.60 is: 1,002,740,163.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,357,240,978.60 : 2,035,861,467.90 = 668,493,442.60 : x
  2. Step 2: Convert to fraction form
    1,357,240,978.60/2,035,861,467.90 = 668,493,442.60/x
  3. Step 3: Cross multiply
    1,357,240,978.60x = 2,035,861,467.90 × 668,493,442.60
  4. Step 4: Simplify right side
    1,357,240,978.60x = 1,360,960,041,333,160,448
  5. Step 5: Solve for x
    x = 1,360,960,041,333,160,448/1,357,240,978.60
  6. Step 6: Final answer
    x = 1,002,740,163.90

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