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Finding the Fourth Proportional to 616,063.82, 849,849.64 and 389,840.54

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Solution

The fourth proportional to 616,063.82, 849,849.64 and 389,840.54 is: 537,778.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,063.82 : 849,849.64 = 389,840.54 : x
  2. Step 2: Convert to fraction form
    616,063.82/849,849.64 = 389,840.54/x
  3. Step 3: Cross multiply
    616,063.82x = 849,849.64 × 389,840.54
  4. Step 4: Simplify right side
    616,063.82x = 331,305,837,352.56
  5. Step 5: Solve for x
    x = 331,305,837,352.56/616,063.82
  6. Step 6: Final answer
    x = 537,778.44

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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.