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Finding the Fourth Proportional to 639,567.64, 882,589.32 and 349,169.28

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Solution

The fourth proportional to 639,567.64, 882,589.32 and 349,169.28 is: 481,845.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,567.64 : 882,589.32 = 349,169.28 : x
  2. Step 2: Convert to fraction form
    639,567.64/882,589.32 = 349,169.28/x
  3. Step 3: Cross multiply
    639,567.64x = 882,589.32 × 349,169.28
  4. Step 4: Simplify right side
    639,567.64x = 308,173,077,400.09
  5. Step 5: Solve for x
    x = 308,173,077,400.09/639,567.64
  6. Step 6: Final answer
    x = 481,845.95

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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.