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Finding the Fourth Proportional to 639,907.62, 882,996.98 and 353,410.62

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Solution

The fourth proportional to 639,907.62, 882,996.98 and 353,410.62 is: 487,664.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,907.62 : 882,996.98 = 353,410.62 : x
  2. Step 2: Convert to fraction form
    639,907.62/882,996.98 = 353,410.62/x
  3. Step 3: Cross multiply
    639,907.62x = 882,996.98 × 353,410.62
  4. Step 4: Simplify right side
    639,907.62x = 312,060,510,159.93
  5. Step 5: Solve for x
    x = 312,060,510,159.93/639,907.62
  6. Step 6: Final answer
    x = 487,664.94

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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.