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Finding the Fourth Proportional to 549,017.89, 823,668.81 and 321,505.64

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Solution

The fourth proportional to 549,017.89, 823,668.81 and 321,505.64 is: 482,341.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,017.89 : 823,668.81 = 321,505.64 : x
  2. Step 2: Convert to fraction form
    549,017.89/823,668.81 = 321,505.64/x
  3. Step 3: Cross multiply
    549,017.89x = 823,668.81 × 321,505.64
  4. Step 4: Simplify right side
    549,017.89x = 264,814,167,907.09
  5. Step 5: Solve for x
    x = 264,814,167,907.09/549,017.89
  6. Step 6: Final answer
    x = 482,341.60

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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.