Home / 678,672.55-1,017,134.03-412,150.15

Finding the Fourth Proportional to 678,672.55, 1,017,134.03 and 412,150.15

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Solution

The fourth proportional to 678,672.55, 1,017,134.03 and 412,150.15 is: 617,693.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,672.55 : 1,017,134.03 = 412,150.15 : x
  2. Step 2: Convert to fraction form
    678,672.55/1,017,134.03 = 412,150.15/x
  3. Step 3: Cross multiply
    678,672.55x = 1,017,134.03 × 412,150.15
  4. Step 4: Simplify right side
    678,672.55x = 419,211,940,973.85
  5. Step 5: Solve for x
    x = 419,211,940,973.85/678,672.55
  6. Step 6: Final answer
    x = 617,693.97

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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.