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Finding the Fourth Proportional to 1,329,728, 1,994,592 and 332,456

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Solution

The fourth proportional to 1,329,728, 1,994,592 and 332,456 is: 498,684

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329,728 : 1,994,592 = 332,456 : x
  2. Step 2: Convert to fraction form
    1,329,728/1,994,592 = 332,456/x
  3. Step 3: Cross multiply
    1,329,728x = 1,994,592 × 332,456
  4. Step 4: Simplify right side
    1,329,728x = 663,114,077,952
  5. Step 5: Solve for x
    x = 663,114,077,952/1,329,728
  6. Step 6: Final answer
    x = 498,684

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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.