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Finding the Fourth Proportional to 483,740.74, 667,509.15 and 279,795.70

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Solution

The fourth proportional to 483,740.74, 667,509.15 and 279,795.70 is: 386,087.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,740.74 : 667,509.15 = 279,795.70 : x
  2. Step 2: Convert to fraction form
    483,740.74/667,509.15 = 279,795.70/x
  3. Step 3: Cross multiply
    483,740.74x = 667,509.15 × 279,795.70
  4. Step 4: Simplify right side
    483,740.74x = 186,766,189,880.66
  5. Step 5: Solve for x
    x = 186,766,189,880.66/483,740.74
  6. Step 6: Final answer
    x = 386,087.37

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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.