Home / 491,823.84-678,709.92-276,984.96

Finding the Fourth Proportional to 491,823.84, 678,709.92 and 276,984.96

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Solution

The fourth proportional to 491,823.84, 678,709.92 and 276,984.96 is: 382,235.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,823.84 : 678,709.92 = 276,984.96 : x
  2. Step 2: Convert to fraction form
    491,823.84/678,709.92 = 276,984.96/x
  3. Step 3: Cross multiply
    491,823.84x = 678,709.92 × 276,984.96
  4. Step 4: Simplify right side
    491,823.84x = 187,992,440,042.80
  5. Step 5: Solve for x
    x = 187,992,440,042.80/491,823.84
  6. Step 6: Final answer
    x = 382,235.31

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1.5x scale

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.