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Finding the Fourth Proportional to 639,335.01, 958,200.62 and 339,074.49

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Solution

The fourth proportional to 639,335.01, 958,200.62 and 339,074.49 is: 508,186.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,335.01 : 958,200.62 = 339,074.49 : x
  2. Step 2: Convert to fraction form
    639,335.01/958,200.62 = 339,074.49/x
  3. Step 3: Cross multiply
    639,335.01x = 958,200.62 × 339,074.49
  4. Step 4: Simplify right side
    639,335.01x = 324,901,384,848.81
  5. Step 5: Solve for x
    x = 324,901,384,848.81/639,335.01
  6. Step 6: Final answer
    x = 508,186.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.