Home / 678,337.20-1,018,161.90-412,616.70

Finding the Fourth Proportional to 678,337.20, 1,018,161.90 and 412,616.70

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Solution

The fourth proportional to 678,337.20, 1,018,161.90 and 412,616.70 is: 619,324.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,337.20 : 1,018,161.90 = 412,616.70 : x
  2. Step 2: Convert to fraction form
    678,337.20/1,018,161.90 = 412,616.70/x
  3. Step 3: Cross multiply
    678,337.20x = 1,018,161.90 × 412,616.70
  4. Step 4: Simplify right side
    678,337.20x = 420,110,603,243.73
  5. Step 5: Solve for x
    x = 420,110,603,243.73/678,337.20
  6. Step 6: Final answer
    x = 619,324.14

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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.