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Finding the Fourth Proportional to 543,907.88, 815,855.75 and 330,734.51

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Solution

The fourth proportional to 543,907.88, 815,855.75 and 330,734.51 is: 496,098.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,907.88 : 815,855.75 = 330,734.51 : x
  2. Step 2: Convert to fraction form
    543,907.88/815,855.75 = 330,734.51/x
  3. Step 3: Cross multiply
    543,907.88x = 815,855.75 × 330,734.51
  4. Step 4: Simplify right side
    543,907.88x = 269,831,650,053.26
  5. Step 5: Solve for x
    x = 269,831,650,053.26/543,907.88
  6. Step 6: Final answer
    x = 496,098.07

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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.