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Finding the Fourth Proportional to 491,865.84, 678,773.18 and 277,005.85

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Solution

The fourth proportional to 491,865.84, 678,773.18 and 277,005.85 is: 382,267.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,865.84 : 678,773.18 = 277,005.85 : x
  2. Step 2: Convert to fraction form
    491,865.84/678,773.18 = 277,005.85/x
  3. Step 3: Cross multiply
    491,865.84x = 678,773.18 × 277,005.85
  4. Step 4: Simplify right side
    491,865.84x = 188,024,140,678.69
  5. Step 5: Solve for x
    x = 188,024,140,678.69/491,865.84
  6. Step 6: Final answer
    x = 382,267.13

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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.