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Finding the Fourth Proportional to 660,139,740.60, 990,209,610.90 and 200,018,122.80

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Solution

The fourth proportional to 660,139,740.60, 990,209,610.90 and 200,018,122.80 is: 300,027,184.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,139,740.60 : 990,209,610.90 = 200,018,122.80 : x
  2. Step 2: Convert to fraction form
    660,139,740.60/990,209,610.90 = 200,018,122.80/x
  3. Step 3: Cross multiply
    660,139,740.60x = 990,209,610.90 × 200,018,122.80
  4. Step 4: Simplify right side
    660,139,740.60x = 198,059,867,550,736,416
  5. Step 5: Solve for x
    x = 198,059,867,550,736,416/660,139,740.60
  6. Step 6: Final answer
    x = 300,027,184.20

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