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Finding the Fourth Proportional to 636,325.42, 878,134.98 and 349,847.50

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Solution

The fourth proportional to 636,325.42, 878,134.98 and 349,847.50 is: 482,792.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,325.42 : 878,134.98 = 349,847.50 : x
  2. Step 2: Convert to fraction form
    636,325.42/878,134.98 = 349,847.50/x
  3. Step 3: Cross multiply
    636,325.42x = 878,134.98 × 349,847.50
  4. Step 4: Simplify right side
    636,325.42x = 307,213,327,415.55
  5. Step 5: Solve for x
    x = 307,213,327,415.55/636,325.42
  6. Step 6: Final answer
    x = 482,792.79

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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.