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Finding the Fourth Proportional to 639,483.13, 882,486.89 and 353,003.41

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Solution

The fourth proportional to 639,483.13, 882,486.89 and 353,003.41 is: 487,144.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,483.13 : 882,486.89 = 353,003.41 : x
  2. Step 2: Convert to fraction form
    639,483.13/882,486.89 = 353,003.41/x
  3. Step 3: Cross multiply
    639,483.13x = 882,486.89 × 353,003.41
  4. Step 4: Simplify right side
    639,483.13x = 311,520,881,450.30
  5. Step 5: Solve for x
    x = 311,520,881,450.30/639,483.13
  6. Step 6: Final answer
    x = 487,144.80

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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.