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Finding the Fourth Proportional to 1,992,424.05, 2,749,757.04 and 1,218,507.66

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Solution

The fourth proportional to 1,992,424.05, 2,749,757.04 and 1,218,507.66 is: 1,681,670.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992,424.05 : 2,749,757.04 = 1,218,507.66 : x
  2. Step 2: Convert to fraction form
    1,992,424.05/2,749,757.04 = 1,218,507.66/x
  3. Step 3: Cross multiply
    1,992,424.05x = 2,749,757.04 × 1,218,507.66
  4. Step 4: Simplify right side
    1,992,424.05x = 3,350,600,016,378.93
  5. Step 5: Solve for x
    x = 3,350,600,016,378.93/1,992,424.05
  6. Step 6: Final answer
    x = 1,681,670.13

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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.