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Finding the Fourth Proportional to 639,614.71, 882,745.70 and 364,039.59

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Solution

The fourth proportional to 639,614.71, 882,745.70 and 364,039.59 is: 502,418.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,614.71 : 882,745.70 = 364,039.59 : x
  2. Step 2: Convert to fraction form
    639,614.71/882,745.70 = 364,039.59/x
  3. Step 3: Cross multiply
    639,614.71x = 882,745.70 × 364,039.59
  4. Step 4: Simplify right side
    639,614.71x = 321,354,382,702.26
  5. Step 5: Solve for x
    x = 321,354,382,702.26/639,614.71
  6. Step 6: Final answer
    x = 502,418.69

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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.