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Finding the Fourth Proportional to 881,699,233.12, 1,216,744,584.28 and 485,222,221.29

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Solution

The fourth proportional to 881,699,233.12, 1,216,744,584.28 and 485,222,221.29 is: 669,606,468.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,699,233.12 : 1,216,744,584.28 = 485,222,221.29 : x
  2. Step 2: Convert to fraction form
    881,699,233.12/1,216,744,584.28 = 485,222,221.29/x
  3. Step 3: Cross multiply
    881,699,233.12x = 1,216,744,584.28 × 485,222,221.29
  4. Step 4: Simplify right side
    881,699,233.12x = 590,391,509,930,268,928
  5. Step 5: Solve for x
    x = 590,391,509,930,268,928/881,699,233.12
  6. Step 6: Final answer
    x = 669,606,468.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.