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Finding the Fourth Proportional to 644,903.40, 966,894.30 and 289,626.60

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Solution

The fourth proportional to 644,903.40, 966,894.30 and 289,626.60 is: 434,232.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,903.40 : 966,894.30 = 289,626.60 : x
  2. Step 2: Convert to fraction form
    644,903.40/966,894.30 = 289,626.60/x
  3. Step 3: Cross multiply
    644,903.40x = 966,894.30 × 289,626.60
  4. Step 4: Simplify right side
    644,903.40x = 280,038,308,668.38
  5. Step 5: Solve for x
    x = 280,038,308,668.38/644,903.40
  6. Step 6: Final answer
    x = 434,232.95

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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.