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Finding the Fourth Proportional to 839,807,999.80, 1,259,711,999.70 and 763,217,510.20

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Solution

The fourth proportional to 839,807,999.80, 1,259,711,999.70 and 763,217,510.20 is: 1,144,826,265.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,807,999.80 : 1,259,711,999.70 = 763,217,510.20 : x
  2. Step 2: Convert to fraction form
    839,807,999.80/1,259,711,999.70 = 763,217,510.20/x
  3. Step 3: Cross multiply
    839,807,999.80x = 1,259,711,999.70 × 763,217,510.20
  4. Step 4: Simplify right side
    839,807,999.80x = 961,434,255,980,097,280
  5. Step 5: Solve for x
    x = 961,434,255,980,097,280/839,807,999.80
  6. Step 6: Final answer
    x = 1,144,826,265.30

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