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Finding the Fourth Proportional to 549,206.85, 822,323.49 and 388,622.73

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Solution

The fourth proportional to 549,206.85, 822,323.49 and 388,622.73 is: 581,882.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,206.85 : 822,323.49 = 388,622.73 : x
  2. Step 2: Convert to fraction form
    549,206.85/822,323.49 = 388,622.73/x
  3. Step 3: Cross multiply
    549,206.85x = 822,323.49 × 388,622.73
  4. Step 4: Simplify right side
    549,206.85x = 319,573,596,486.87
  5. Step 5: Solve for x
    x = 319,573,596,486.87/549,206.85
  6. Step 6: Final answer
    x = 581,882.03

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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.