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Finding the Fourth Proportional to 491,771.34, 678,709.02 and 276,953.40

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Solution

The fourth proportional to 491,771.34, 678,709.02 and 276,953.40 is: 382,232.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,771.34 : 678,709.02 = 276,953.40 : x
  2. Step 2: Convert to fraction form
    491,771.34/678,709.02 = 276,953.40/x
  3. Step 3: Cross multiply
    491,771.34x = 678,709.02 × 276,953.40
  4. Step 4: Simplify right side
    491,771.34x = 187,970,770,699.67
  5. Step 5: Solve for x
    x = 187,970,770,699.67/491,771.34
  6. Step 6: Final answer
    x = 382,232.06

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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.