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Finding the Fourth Proportional to 549,318.82, 758,136.78 and 396,850.30

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Solution

The fourth proportional to 549,318.82, 758,136.78 and 396,850.30 is: 547,708.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,318.82 : 758,136.78 = 396,850.30 : x
  2. Step 2: Convert to fraction form
    549,318.82/758,136.78 = 396,850.30/x
  3. Step 3: Cross multiply
    549,318.82x = 758,136.78 × 396,850.30
  4. Step 4: Simplify right side
    549,318.82x = 300,866,808,584.03
  5. Step 5: Solve for x
    x = 300,866,808,584.03/549,318.82
  6. Step 6: Final answer
    x = 547,708.90

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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.