Home / 491,836.61-678,736.06-285,145.29

Finding the Fourth Proportional to 491,836.61, 678,736.06 and 285,145.29

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Solution

The fourth proportional to 491,836.61, 678,736.06 and 285,145.29 is: 393,501.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,836.61 : 678,736.06 = 285,145.29 : x
  2. Step 2: Convert to fraction form
    491,836.61/678,736.06 = 285,145.29/x
  3. Step 3: Cross multiply
    491,836.61x = 678,736.06 × 285,145.29
  4. Step 4: Simplify right side
    491,836.61x = 193,538,389,949.29
  5. Step 5: Solve for x
    x = 193,538,389,949.29/491,836.61
  6. Step 6: Final answer
    x = 393,501.39

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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.