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Finding the Fourth Proportional to 427,319,010.30, 640,978,515.45 and 422,784,047.10

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Solution

The fourth proportional to 427,319,010.30, 640,978,515.45 and 422,784,047.10 is: 634,176,070.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,319,010.30 : 640,978,515.45 = 422,784,047.10 : x
  2. Step 2: Convert to fraction form
    427,319,010.30/640,978,515.45 = 422,784,047.10/x
  3. Step 3: Cross multiply
    427,319,010.30x = 640,978,515.45 × 422,784,047.10
  4. Step 4: Simplify right side
    427,319,010.30x = 270,995,490,866,100,928
  5. Step 5: Solve for x
    x = 270,995,490,866,100,928/427,319,010.30
  6. Step 6: Final answer
    x = 634,176,070.65

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Why These Related Problems?

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