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Finding the Fourth Proportional to 639,549.81, 882,573.03 and 353,063.73

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Solution

The fourth proportional to 639,549.81, 882,573.03 and 353,063.73 is: 487,224.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,549.81 : 882,573.03 = 353,063.73 : x
  2. Step 2: Convert to fraction form
    639,549.81/882,573.03 = 353,063.73/x
  3. Step 3: Cross multiply
    639,549.81x = 882,573.03 × 353,063.73
  4. Step 4: Simplify right side
    639,549.81x = 311,604,525,969.20
  5. Step 5: Solve for x
    x = 311,604,525,969.20/639,549.81
  6. Step 6: Final answer
    x = 487,224.80

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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.