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Finding the Fourth Proportional to 496,908.34, 685,682.01 and 279,141.46

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Solution

The fourth proportional to 496,908.34, 685,682.01 and 279,141.46 is: 385,186.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,908.34 : 685,682.01 = 279,141.46 : x
  2. Step 2: Convert to fraction form
    496,908.34/685,682.01 = 279,141.46/x
  3. Step 3: Cross multiply
    496,908.34x = 685,682.01 × 279,141.46
  4. Step 4: Simplify right side
    496,908.34x = 191,402,275,652.93
  5. Step 5: Solve for x
    x = 191,402,275,652.93/496,908.34
  6. Step 6: Final answer
    x = 385,186.28

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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.