Home / 644,911.40-966,906.30-289,634.60

Finding the Fourth Proportional to 644,911.40, 966,906.30 and 289,634.60

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Solution

The fourth proportional to 644,911.40, 966,906.30 and 289,634.60 is: 434,244.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,911.40 : 966,906.30 = 289,634.60 : x
  2. Step 2: Convert to fraction form
    644,911.40/966,906.30 = 289,634.60/x
  3. Step 3: Cross multiply
    644,911.40x = 966,906.30 × 289,634.60
  4. Step 4: Simplify right side
    644,911.40x = 280,049,519,437.98
  5. Step 5: Solve for x
    x = 280,049,519,437.98/644,911.40
  6. Step 6: Final answer
    x = 434,244.95

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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.