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Finding the Fourth Proportional to 1,333,287.99, 1,839,923.64 and 721,427.27

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Solution

The fourth proportional to 1,333,287.99, 1,839,923.64 and 721,427.27 is: 995,562.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,333,287.99 : 1,839,923.64 = 721,427.27 : x
  2. Step 2: Convert to fraction form
    1,333,287.99/1,839,923.64 = 721,427.27/x
  3. Step 3: Cross multiply
    1,333,287.99x = 1,839,923.64 × 721,427.27
  4. Step 4: Simplify right side
    1,333,287.99x = 1,327,371,079,414.04
  5. Step 5: Solve for x
    x = 1,327,371,079,414.04/1,333,287.99
  6. Step 6: Final answer
    x = 995,562.17

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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.