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Finding the Fourth Proportional to 639,549.69, 882,555.44 and 353,063.63

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Solution

The fourth proportional to 639,549.69, 882,555.44 and 353,063.63 is: 487,215.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,549.69 : 882,555.44 = 353,063.63 : x
  2. Step 2: Convert to fraction form
    639,549.69/882,555.44 = 353,063.63/x
  3. Step 3: Cross multiply
    639,549.69x = 882,555.44 × 353,063.63
  4. Step 4: Simplify right side
    639,549.69x = 311,598,227,322.65
  5. Step 5: Solve for x
    x = 311,598,227,322.65/639,549.69
  6. Step 6: Final answer
    x = 487,215.04

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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.