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Finding the Fourth Proportional to 644,493.68, 966,838.80 and 328,778.36

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Solution

The fourth proportional to 644,493.68, 966,838.80 and 328,778.36 is: 493,217.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,493.68 : 966,838.80 = 328,778.36 : x
  2. Step 2: Convert to fraction form
    644,493.68/966,838.80 = 328,778.36/x
  3. Step 3: Cross multiply
    644,493.68x = 966,838.80 × 328,778.36
  4. Step 4: Simplify right side
    644,493.68x = 317,875,675,048.37
  5. Step 5: Solve for x
    x = 317,875,675,048.37/644,493.68
  6. Step 6: Final answer
    x = 493,217.68

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1.5x scale

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.