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Finding the Fourth Proportional to 873,540.84, 1,310,318.54 and 274,488.72

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Solution

The fourth proportional to 873,540.84, 1,310,318.54 and 274,488.72 is: 411,735.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,540.84 : 1,310,318.54 = 274,488.72 : x
  2. Step 2: Convert to fraction form
    873,540.84/1,310,318.54 = 274,488.72/x
  3. Step 3: Cross multiply
    873,540.84x = 1,310,318.54 × 274,488.72
  4. Step 4: Simplify right side
    873,540.84x = 359,667,658,836.87
  5. Step 5: Solve for x
    x = 359,667,658,836.87/873,540.84
  6. Step 6: Final answer
    x = 411,735.37

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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.