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Finding the Fourth Proportional to 636,860.94, 878,868.05 and 350,374.88

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Solution

The fourth proportional to 636,860.94, 878,868.05 and 350,374.88 is: 483,517.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,860.94 : 878,868.05 = 350,374.88 : x
  2. Step 2: Convert to fraction form
    636,860.94/878,868.05 = 350,374.88/x
  3. Step 3: Cross multiply
    636,860.94x = 878,868.05 × 350,374.88
  4. Step 4: Simplify right side
    636,860.94x = 307,933,281,408.37
  5. Step 5: Solve for x
    x = 307,933,281,408.37/636,860.94
  6. Step 6: Final answer
    x = 483,517.30

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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.