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Finding the Fourth Proportional to 662,479.44, 993,579.84 and 213,240.48

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Solution

The fourth proportional to 662,479.44, 993,579.84 and 213,240.48 is: 319,815.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,479.44 : 993,579.84 = 213,240.48 : x
  2. Step 2: Convert to fraction form
    662,479.44/993,579.84 = 213,240.48/x
  3. Step 3: Cross multiply
    662,479.44x = 993,579.84 × 213,240.48
  4. Step 4: Simplify right side
    662,479.44x = 211,871,441,999.92
  5. Step 5: Solve for x
    x = 211,871,441,999.92/662,479.44
  6. Step 6: Final answer
    x = 319,815.88

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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.