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Finding the Fourth Proportional to 499,696.89, 748,344.30 and 285,816.39

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Solution

The fourth proportional to 499,696.89, 748,344.30 and 285,816.39 is: 428,037.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,696.89 : 748,344.30 = 285,816.39 : x
  2. Step 2: Convert to fraction form
    499,696.89/748,344.30 = 285,816.39/x
  3. Step 3: Cross multiply
    499,696.89x = 748,344.30 × 285,816.39
  4. Step 4: Simplify right side
    499,696.89x = 213,889,066,303.08
  5. Step 5: Solve for x
    x = 213,889,066,303.08/499,696.89
  6. Step 6: Final answer
    x = 428,037.62

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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.