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Finding the Fourth Proportional to 557,581.54, 769,467.95 and 315,858.95

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Solution

The fourth proportional to 557,581.54, 769,467.95 and 315,858.95 is: 435,888.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,581.54 : 769,467.95 = 315,858.95 : x
  2. Step 2: Convert to fraction form
    557,581.54/769,467.95 = 315,858.95/x
  3. Step 3: Cross multiply
    557,581.54x = 769,467.95 × 315,858.95
  4. Step 4: Simplify right side
    557,581.54x = 243,043,338,745.65
  5. Step 5: Solve for x
    x = 243,043,338,745.65/557,581.54
  6. Step 6: Final answer
    x = 435,888.42

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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.