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Finding the Fourth Proportional to 3,146,123.64, 4,719,286.92 and 871,669.97

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Solution

The fourth proportional to 3,146,123.64, 4,719,286.92 and 871,669.97 is: 1,307,533.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,146,123.64 : 4,719,286.92 = 871,669.97 : x
  2. Step 2: Convert to fraction form
    3,146,123.64/4,719,286.92 = 871,669.97/x
  3. Step 3: Cross multiply
    3,146,123.64x = 4,719,286.92 × 871,669.97
  4. Step 4: Simplify right side
    3,146,123.64x = 4,113,660,664,381.36
  5. Step 5: Solve for x
    x = 4,113,660,664,381.36/3,146,123.64
  6. Step 6: Final answer
    x = 1,307,533.06

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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.