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Finding the Fourth Proportional to 639,990.62, 883,167.00 and 349,597.52

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Solution

The fourth proportional to 639,990.62, 883,167.00 and 349,597.52 is: 482,433.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,990.62 : 883,167.00 = 349,597.52 : x
  2. Step 2: Convert to fraction form
    639,990.62/883,167.00 = 349,597.52/x
  3. Step 3: Cross multiply
    639,990.62x = 883,167.00 × 349,597.52
  4. Step 4: Simplify right side
    639,990.62x = 308,752,990,530.89
  5. Step 5: Solve for x
    x = 308,752,990,530.89/639,990.62
  6. Step 6: Final answer
    x = 482,433.62

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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.