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Finding the Fourth Proportional to 644,804.40, 966,745.80 and 289,527.60

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Solution

The fourth proportional to 644,804.40, 966,745.80 and 289,527.60 is: 434,084.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,804.40 : 966,745.80 = 289,527.60 : x
  2. Step 2: Convert to fraction form
    644,804.40/966,745.80 = 289,527.60/x
  3. Step 3: Cross multiply
    644,804.40x = 966,745.80 × 289,527.60
  4. Step 4: Simplify right side
    644,804.40x = 279,899,591,284.08
  5. Step 5: Solve for x
    x = 279,899,591,284.08/644,804.40
  6. Step 6: Final answer
    x = 434,084.49

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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.