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Finding the Fourth Proportional to 638,971,774.80, 958,457,662.20 and 570,097,021.20

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Solution

The fourth proportional to 638,971,774.80, 958,457,662.20 and 570,097,021.20 is: 855,145,531.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,971,774.80 : 958,457,662.20 = 570,097,021.20 : x
  2. Step 2: Convert to fraction form
    638,971,774.80/958,457,662.20 = 570,097,021.20/x
  3. Step 3: Cross multiply
    638,971,774.80x = 958,457,662.20 × 570,097,021.20
  4. Step 4: Simplify right side
    638,971,774.80x = 546,413,858,166,535,936
  5. Step 5: Solve for x
    x = 546,413,858,166,535,936/638,971,774.80
  6. Step 6: Final answer
    x = 855,145,531.80

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