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Finding the Fourth Proportional to 5,159,604.92, 7,739,383.02 and 1,321,420.04

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Solution

The fourth proportional to 5,159,604.92, 7,739,383.02 and 1,321,420.04 is: 1,982,123.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,159,604.92 : 7,739,383.02 = 1,321,420.04 : x
  2. Step 2: Convert to fraction form
    5,159,604.92/7,739,383.02 = 1,321,420.04/x
  3. Step 3: Cross multiply
    5,159,604.92x = 7,739,383.02 × 1,321,420.04
  4. Step 4: Simplify right side
    5,159,604.92x = 10,226,975,819,863.72
  5. Step 5: Solve for x
    x = 10,226,975,819,863.72/5,159,604.92
  6. Step 6: Final answer
    x = 1,982,123.82

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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.