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Finding the Fourth Proportional to 639,548.70, 882,554.07 and 353,062.62

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Solution

The fourth proportional to 639,548.70, 882,554.07 and 353,062.62 is: 487,213.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,548.70 : 882,554.07 = 353,062.62 : x
  2. Step 2: Convert to fraction form
    639,548.70/882,554.07 = 353,062.62/x
  3. Step 3: Cross multiply
    639,548.70x = 882,554.07 × 353,062.62
  4. Step 4: Simplify right side
    639,548.70x = 311,596,852,245.86
  5. Step 5: Solve for x
    x = 311,596,852,245.86/639,548.70
  6. Step 6: Final answer
    x = 487,213.64

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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.