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Finding the Fourth Proportional to 491,560.36, 678,345.78 and 276,699.76

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Solution

The fourth proportional to 491,560.36, 678,345.78 and 276,699.76 is: 381,841.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,560.36 : 678,345.78 = 276,699.76 : x
  2. Step 2: Convert to fraction form
    491,560.36/678,345.78 = 276,699.76/x
  3. Step 3: Cross multiply
    491,560.36x = 678,345.78 × 276,699.76
  4. Step 4: Simplify right side
    491,560.36x = 187,698,114,523.01
  5. Step 5: Solve for x
    x = 187,698,114,523.01/491,560.36
  6. Step 6: Final answer
    x = 381,841.44

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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.