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Finding the Fourth Proportional to 493,361.76, 680,843.02 and 289,416.04

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Solution

The fourth proportional to 493,361.76, 680,843.02 and 289,416.04 is: 399,396.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,361.76 : 680,843.02 = 289,416.04 : x
  2. Step 2: Convert to fraction form
    493,361.76/680,843.02 = 289,416.04/x
  3. Step 3: Cross multiply
    493,361.76x = 680,843.02 × 289,416.04
  4. Step 4: Simplify right side
    493,361.76x = 197,046,890,710.04
  5. Step 5: Solve for x
    x = 197,046,890,710.04/493,361.76
  6. Step 6: Final answer
    x = 399,396.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.