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Finding the Fourth Proportional to 496,891.47, 685,655.67 and 279,055.92

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Solution

The fourth proportional to 496,891.47, 685,655.67 and 279,055.92 is: 385,066.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,891.47 : 685,655.67 = 279,055.92 : x
  2. Step 2: Convert to fraction form
    496,891.47/685,655.67 = 279,055.92/x
  3. Step 3: Cross multiply
    496,891.47x = 685,655.67 × 279,055.92
  4. Step 4: Simplify right side
    496,891.47x = 191,336,273,795.07
  5. Step 5: Solve for x
    x = 191,336,273,795.07/496,891.47
  6. Step 6: Final answer
    x = 385,066.53

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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.