Home / 678,427.23-1,017,654.65-279,016.10

Finding the Fourth Proportional to 678,427.23, 1,017,654.65 and 279,016.10

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Solution

The fourth proportional to 678,427.23, 1,017,654.65 and 279,016.10 is: 418,529.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,427.23 : 1,017,654.65 = 279,016.10 : x
  2. Step 2: Convert to fraction form
    678,427.23/1,017,654.65 = 279,016.10/x
  3. Step 3: Cross multiply
    678,427.23x = 1,017,654.65 × 279,016.10
  4. Step 4: Simplify right side
    678,427.23x = 283,942,031,589.87
  5. Step 5: Solve for x
    x = 283,942,031,589.87/678,427.23
  6. Step 6: Final answer
    x = 418,529.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.