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Finding the Fourth Proportional to 557,300.40, 769,309.92 and 376,257.52

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Solution

The fourth proportional to 557,300.40, 769,309.92 and 376,257.52 is: 519,394.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,300.40 : 769,309.92 = 376,257.52 : x
  2. Step 2: Convert to fraction form
    557,300.40/769,309.92 = 376,257.52/x
  3. Step 3: Cross multiply
    557,300.40x = 769,309.92 × 376,257.52
  4. Step 4: Simplify right side
    557,300.40x = 289,458,642,610.60
  5. Step 5: Solve for x
    x = 289,458,642,610.60/557,300.40
  6. Step 6: Final answer
    x = 519,394.28

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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.