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Finding the Fourth Proportional to 496,775.71, 685,548.54 and 278,954.09

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Solution

The fourth proportional to 496,775.71, 685,548.54 and 278,954.09 is: 384,955.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,775.71 : 685,548.54 = 278,954.09 : x
  2. Step 2: Convert to fraction form
    496,775.71/685,548.54 = 278,954.09/x
  3. Step 3: Cross multiply
    496,775.71x = 685,548.54 × 278,954.09
  4. Step 4: Simplify right side
    496,775.71x = 191,236,571,341.25
  5. Step 5: Solve for x
    x = 191,236,571,341.25/496,775.71
  6. Step 6: Final answer
    x = 384,955.56

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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.