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Finding the Fourth Proportional to 664,517.60, 997,006.80 and 290,808.80

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Solution

The fourth proportional to 664,517.60, 997,006.80 and 290,808.80 is: 436,314.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,517.60 : 997,006.80 = 290,808.80 : x
  2. Step 2: Convert to fraction form
    664,517.60/997,006.80 = 290,808.80/x
  3. Step 3: Cross multiply
    664,517.60x = 997,006.80 × 290,808.80
  4. Step 4: Simplify right side
    664,517.60x = 289,938,351,099.84
  5. Step 5: Solve for x
    x = 289,938,351,099.84/664,517.60
  6. Step 6: Final answer
    x = 436,314.03

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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.