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Finding the Fourth Proportional to 393,624.60, 589,675.68 and 329,685.54

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Solution

The fourth proportional to 393,624.60, 589,675.68 and 329,685.54 is: 493,890.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,624.60 : 589,675.68 = 329,685.54 : x
  2. Step 2: Convert to fraction form
    393,624.60/589,675.68 = 329,685.54/x
  3. Step 3: Cross multiply
    393,624.60x = 589,675.68 × 329,685.54
  4. Step 4: Simplify right side
    393,624.60x = 194,407,544,985.67
  5. Step 5: Solve for x
    x = 194,407,544,985.67/393,624.60
  6. Step 6: Final answer
    x = 493,890.74

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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.