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Finding the Fourth Proportional to 499,621.44, 689,762.88 and 330,346.56

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Solution

The fourth proportional to 499,621.44, 689,762.88 and 330,346.56 is: 456,066.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,621.44 : 689,762.88 = 330,346.56 : x
  2. Step 2: Convert to fraction form
    499,621.44/689,762.88 = 330,346.56/x
  3. Step 3: Cross multiply
    499,621.44x = 689,762.88 × 330,346.56
  4. Step 4: Simplify right side
    499,621.44x = 227,860,794,623.69
  5. Step 5: Solve for x
    x = 227,860,794,623.69/499,621.44
  6. Step 6: Final answer
    x = 456,066.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.