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Finding the Fourth Proportional to 557,283.34, 769,286.45 and 376,240.51

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Solution

The fourth proportional to 557,283.34, 769,286.45 and 376,240.51 is: 519,370.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,283.34 : 769,286.45 = 376,240.51 : x
  2. Step 2: Convert to fraction form
    557,283.34/769,286.45 = 376,240.51/x
  3. Step 3: Cross multiply
    557,283.34x = 769,286.45 × 376,240.51
  4. Step 4: Simplify right side
    557,283.34x = 289,436,720,556.46
  5. Step 5: Solve for x
    x = 289,436,720,556.46/557,283.34
  6. Step 6: Final answer
    x = 519,370.85

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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.