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Finding the Fourth Proportional to 489,077.91, 733,617.32 and 393,861.60

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Solution

The fourth proportional to 489,077.91, 733,617.32 and 393,861.60 is: 590,792.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,077.91 : 733,617.32 = 393,861.60 : x
  2. Step 2: Convert to fraction form
    489,077.91/733,617.32 = 393,861.60/x
  3. Step 3: Cross multiply
    489,077.91x = 733,617.32 × 393,861.60
  4. Step 4: Simplify right side
    489,077.91x = 288,943,689,473.60
  5. Step 5: Solve for x
    x = 288,943,689,473.60/489,077.91
  6. Step 6: Final answer
    x = 590,792.76

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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.