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Finding the Fourth Proportional to 638,846.42, 958,860.11 and 323,524.76

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Solution

The fourth proportional to 638,846.42, 958,860.11 and 323,524.76 is: 485,586.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,846.42 : 958,860.11 = 323,524.76 : x
  2. Step 2: Convert to fraction form
    638,846.42/958,860.11 = 323,524.76/x
  3. Step 3: Cross multiply
    638,846.42x = 958,860.11 × 323,524.76
  4. Step 4: Simplify right side
    638,846.42x = 310,214,980,549.40
  5. Step 5: Solve for x
    x = 310,214,980,549.40/638,846.42
  6. Step 6: Final answer
    x = 485,586.16

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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.