Home / 678,773.09-936,652.23-392,311.73

Finding the Fourth Proportional to 678,773.09, 936,652.23 and 392,311.73

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Solution

The fourth proportional to 678,773.09, 936,652.23 and 392,311.73 is: 541,358.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,773.09 : 936,652.23 = 392,311.73 : x
  2. Step 2: Convert to fraction form
    678,773.09/936,652.23 = 392,311.73/x
  3. Step 3: Cross multiply
    678,773.09x = 936,652.23 × 392,311.73
  4. Step 4: Simplify right side
    678,773.09x = 367,459,659,101.29
  5. Step 5: Solve for x
    x = 367,459,659,101.29/678,773.09
  6. Step 6: Final answer
    x = 541,358.61

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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.