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Finding the Fourth Proportional to 664,379.20, 994,495.20 and 523,374.40

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Solution

The fourth proportional to 664,379.20, 994,495.20 and 523,374.40 is: 783,428.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,379.20 : 994,495.20 = 523,374.40 : x
  2. Step 2: Convert to fraction form
    664,379.20/994,495.20 = 523,374.40/x
  3. Step 3: Cross multiply
    664,379.20x = 994,495.20 × 523,374.40
  4. Step 4: Simplify right side
    664,379.20x = 520,493,328,602.88
  5. Step 5: Solve for x
    x = 520,493,328,602.88/664,379.20
  6. Step 6: Final answer
    x = 783,428.09

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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.