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Finding the Fourth Proportional to 1,329,720, 1,994,580 and 332,448

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Solution

The fourth proportional to 1,329,720, 1,994,580 and 332,448 is: 498,672

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329,720 : 1,994,580 = 332,448 : x
  2. Step 2: Convert to fraction form
    1,329,720/1,994,580 = 332,448/x
  3. Step 3: Cross multiply
    1,329,720x = 1,994,580 × 332,448
  4. Step 4: Simplify right side
    1,329,720x = 663,094,131,840
  5. Step 5: Solve for x
    x = 663,094,131,840/1,329,720
  6. Step 6: Final answer
    x = 498,672

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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.