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Finding the Fourth Proportional to 1,333,013.02, 1,839,555.99 and 721,163.80

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Solution

The fourth proportional to 1,333,013.02, 1,839,555.99 and 721,163.80 is: 995,204.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,333,013.02 : 1,839,555.99 = 721,163.80 : x
  2. Step 2: Convert to fraction form
    1,333,013.02/1,839,555.99 = 721,163.80/x
  3. Step 3: Cross multiply
    1,333,013.02x = 1,839,555.99 × 721,163.80
  4. Step 4: Simplify right side
    1,333,013.02x = 1,326,621,188,061.16
  5. Step 5: Solve for x
    x = 1,326,621,188,061.16/1,333,013.02
  6. Step 6: Final answer
    x = 995,204.97

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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.