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Finding the Fourth Proportional to 492,620.43, 737,490.42 and 445,343.87

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Solution

The fourth proportional to 492,620.43, 737,490.42 and 445,343.87 is: 666,713.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,620.43 : 737,490.42 = 445,343.87 : x
  2. Step 2: Convert to fraction form
    492,620.43/737,490.42 = 445,343.87/x
  3. Step 3: Cross multiply
    492,620.43x = 737,490.42 × 445,343.87
  4. Step 4: Simplify right side
    492,620.43x = 328,436,839,574.45
  5. Step 5: Solve for x
    x = 328,436,839,574.45/492,620.43
  6. Step 6: Final answer
    x = 666,713.80

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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.