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Finding the Fourth Proportional to 658,212.96, 987,676.65 and 279,346.80

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Solution

The fourth proportional to 658,212.96, 987,676.65 and 279,346.80 is: 419,171.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,212.96 : 987,676.65 = 279,346.80 : x
  2. Step 2: Convert to fraction form
    658,212.96/987,676.65 = 279,346.80/x
  3. Step 3: Cross multiply
    658,212.96x = 987,676.65 × 279,346.80
  4. Step 4: Simplify right side
    658,212.96x = 275,904,311,612.22
  5. Step 5: Solve for x
    x = 275,904,311,612.22/658,212.96
  6. Step 6: Final answer
    x = 419,171.80

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1.5x scale

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.