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Finding the Fourth Proportional to 653,205,520.30, 978,674,539.65 and 423,056,137.90

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Solution

The fourth proportional to 653,205,520.30, 978,674,539.65 and 423,056,137.90 is: 633,849,926.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,205,520.30 : 978,674,539.65 = 423,056,137.90 : x
  2. Step 2: Convert to fraction form
    653,205,520.30/978,674,539.65 = 423,056,137.90/x
  3. Step 3: Cross multiply
    653,205,520.30x = 978,674,539.65 × 423,056,137.90
  4. Step 4: Simplify right side
    653,205,520.30x = 414,034,271,005,389,376
  5. Step 5: Solve for x
    x = 414,034,271,005,389,376/653,205,520.30
  6. Step 6: Final answer
    x = 633,849,926.46

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