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Finding the Fourth Proportional to 639,625.54, 882,684.92 and 349,237.50

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Solution

The fourth proportional to 639,625.54, 882,684.92 and 349,237.50 is: 481,948.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,625.54 : 882,684.92 = 349,237.50 : x
  2. Step 2: Convert to fraction form
    639,625.54/882,684.92 = 349,237.50/x
  3. Step 3: Cross multiply
    639,625.54x = 882,684.92 × 349,237.50
  4. Step 4: Simplify right side
    639,625.54x = 308,266,674,748.50
  5. Step 5: Solve for x
    x = 308,266,674,748.50/639,625.54
  6. Step 6: Final answer
    x = 481,948.66

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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.