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Finding the Fourth Proportional to 636,212.18, 877,978.98 and 345,825.02

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Solution

The fourth proportional to 636,212.18, 877,978.98 and 345,825.02 is: 477,241.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,212.18 : 877,978.98 = 345,825.02 : x
  2. Step 2: Convert to fraction form
    636,212.18/877,978.98 = 345,825.02/x
  3. Step 3: Cross multiply
    636,212.18x = 877,978.98 × 345,825.02
  4. Step 4: Simplify right side
    636,212.18x = 303,627,098,318.08
  5. Step 5: Solve for x
    x = 303,627,098,318.08/636,212.18
  6. Step 6: Final answer
    x = 477,241.88

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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.