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Finding the Fourth Proportional to 549,208.85, 822,326.49 and 388,624.73

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Solution

The fourth proportional to 549,208.85, 822,326.49 and 388,624.73 is: 581,885.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,208.85 : 822,326.49 = 388,624.73 : x
  2. Step 2: Convert to fraction form
    549,208.85/822,326.49 = 388,624.73/x
  3. Step 3: Cross multiply
    549,208.85x = 822,326.49 × 388,624.73
  4. Step 4: Simplify right side
    549,208.85x = 319,576,410,148.10
  5. Step 5: Solve for x
    x = 319,576,410,148.10/549,208.85
  6. Step 6: Final answer
    x = 581,885.03

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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.