Home / 398,512,521.46-549,950,858.94-219,904,353.55

Finding the Fourth Proportional to 398,512,521.46, 549,950,858.94 and 219,904,353.55

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Solution

The fourth proportional to 398,512,521.46, 549,950,858.94 and 219,904,353.55 is: 303,469,983.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,512,521.46 : 549,950,858.94 = 219,904,353.55 : x
  2. Step 2: Convert to fraction form
    398,512,521.46/549,950,858.94 = 219,904,353.55/x
  3. Step 3: Cross multiply
    398,512,521.46x = 549,950,858.94 × 219,904,353.55
  4. Step 4: Simplify right side
    398,512,521.46x = 120,936,588,119,467,952
  5. Step 5: Solve for x
    x = 120,936,588,119,467,952/398,512,521.46
  6. Step 6: Final answer
    x = 303,469,983.02

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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.