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Finding the Fourth Proportional to 593,414.40, 818,910.93 and 321,489.21

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Solution

The fourth proportional to 593,414.40, 818,910.93 and 321,489.21 is: 443,654.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    593,414.40 : 818,910.93 = 321,489.21 : x
  2. Step 2: Convert to fraction form
    593,414.40/818,910.93 = 321,489.21/x
  3. Step 3: Cross multiply
    593,414.40x = 818,910.93 × 321,489.21
  4. Step 4: Simplify right side
    593,414.40x = 263,271,027,946.07
  5. Step 5: Solve for x
    x = 263,271,027,946.07/593,414.40
  6. Step 6: Final answer
    x = 443,654.60

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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.