Home / 678,773.03-936,652.16-392,311.67

Finding the Fourth Proportional to 678,773.03, 936,652.16 and 392,311.67

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Solution

The fourth proportional to 678,773.03, 936,652.16 and 392,311.67 is: 541,358.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,773.03 : 936,652.16 = 392,311.67 : x
  2. Step 2: Convert to fraction form
    678,773.03/936,652.16 = 392,311.67/x
  3. Step 3: Cross multiply
    678,773.03x = 936,652.16 × 392,311.67
  4. Step 4: Simplify right side
    678,773.03x = 367,459,571,137.15
  5. Step 5: Solve for x
    x = 367,459,571,137.15/678,773.03
  6. Step 6: Final answer
    x = 541,358.53

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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.