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Finding the Fourth Proportional to 494,539.72, 682,477.82 and 279,711.52

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Solution

The fourth proportional to 494,539.72, 682,477.82 and 279,711.52 is: 386,009.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,539.72 : 682,477.82 = 279,711.52 : x
  2. Step 2: Convert to fraction form
    494,539.72/682,477.82 = 279,711.52/x
  3. Step 3: Cross multiply
    494,539.72x = 682,477.82 × 279,711.52
  4. Step 4: Simplify right side
    494,539.72x = 190,896,908,398.49
  5. Step 5: Solve for x
    x = 190,896,908,398.49/494,539.72
  6. Step 6: Final answer
    x = 386,009.25

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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.