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Finding the Fourth Proportional to 3,384,944.64, 5,077,890.72 and 988,964.64

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Solution

The fourth proportional to 3,384,944.64, 5,077,890.72 and 988,964.64 is: 1,483,585.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,384,944.64 : 5,077,890.72 = 988,964.64 : x
  2. Step 2: Convert to fraction form
    3,384,944.64/5,077,890.72 = 988,964.64/x
  3. Step 3: Cross multiply
    3,384,944.64x = 5,077,890.72 × 988,964.64
  4. Step 4: Simplify right side
    3,384,944.64x = 5,021,854,367,864.14
  5. Step 5: Solve for x
    x = 5,021,854,367,864.14/3,384,944.64
  6. Step 6: Final answer
    x = 1,483,585.38

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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.