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Finding the Fourth Proportional to 489,124.89, 733,317.62 and 320,687.60

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Solution

The fourth proportional to 489,124.89, 733,317.62 and 320,687.60 is: 480,788.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,124.89 : 733,317.62 = 320,687.60 : x
  2. Step 2: Convert to fraction form
    489,124.89/733,317.62 = 320,687.60/x
  3. Step 3: Cross multiply
    489,124.89x = 733,317.62 × 320,687.60
  4. Step 4: Simplify right side
    489,124.89x = 235,165,862,325.49
  5. Step 5: Solve for x
    x = 235,165,862,325.49/489,124.89
  6. Step 6: Final answer
    x = 480,788.99

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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.