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Finding the Fourth Proportional to 498,477.80, 746,663.70 and 330,078.80

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Solution

The fourth proportional to 498,477.80, 746,663.70 and 330,078.80 is: 494,420.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,477.80 : 746,663.70 = 330,078.80 : x
  2. Step 2: Convert to fraction form
    498,477.80/746,663.70 = 330,078.80/x
  3. Step 3: Cross multiply
    498,477.80x = 746,663.70 × 330,078.80
  4. Step 4: Simplify right side
    498,477.80x = 246,457,858,099.56
  5. Step 5: Solve for x
    x = 246,457,858,099.56/498,477.80
  6. Step 6: Final answer
    x = 494,420.93

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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.