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Finding the Fourth Proportional to 621,461.52, 857,488.14 and 363,288.33

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Solution

The fourth proportional to 621,461.52, 857,488.14 and 363,288.33 is: 501,262.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,461.52 : 857,488.14 = 363,288.33 : x
  2. Step 2: Convert to fraction form
    621,461.52/857,488.14 = 363,288.33/x
  3. Step 3: Cross multiply
    621,461.52x = 857,488.14 × 363,288.33
  4. Step 4: Simplify right side
    621,461.52x = 311,515,434,375.41
  5. Step 5: Solve for x
    x = 311,515,434,375.41/621,461.52
  6. Step 6: Final answer
    x = 501,262.63

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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.