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Finding the Fourth Proportional to 839,808,999.20, 1,259,713,499.52 and 839,808,999.20

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Solution

The fourth proportional to 839,808,999.20, 1,259,713,499.52 and 839,808,999.20 is: 1,259,713,499.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,808,999.20 : 1,259,713,499.52 = 839,808,999.20 : x
  2. Step 2: Convert to fraction form
    839,808,999.20/1,259,713,499.52 = 839,808,999.20/x
  3. Step 3: Cross multiply
    839,808,999.20x = 1,259,713,499.52 × 839,808,999.20
  4. Step 4: Simplify right side
    839,808,999.20x = 1,057,918,733,310,620,928
  5. Step 5: Solve for x
    x = 1,057,918,733,310,620,928/839,808,999.20
  6. Step 6: Final answer
    x = 1,259,713,499.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.