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Finding the Fourth Proportional to 448,578,420.40, 672,867,630.60 and 448,578,420.40

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Solution

The fourth proportional to 448,578,420.40, 672,867,630.60 and 448,578,420.40 is: 672,867,630.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,578,420.40 : 672,867,630.60 = 448,578,420.40 : x
  2. Step 2: Convert to fraction form
    448,578,420.40/672,867,630.60 = 448,578,420.40/x
  3. Step 3: Cross multiply
    448,578,420.40x = 672,867,630.60 × 448,578,420.40
  4. Step 4: Simplify right side
    448,578,420.40x = 301,833,898,872,838,720
  5. Step 5: Solve for x
    x = 301,833,898,872,838,720/448,578,420.40
  6. Step 6: Final answer
    x = 672,867,630.60

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