Home / 644,614.40-965,755.20-395,004.80

Finding the Fourth Proportional to 644,614.40, 965,755.20 and 395,004.80

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Solution

The fourth proportional to 644,614.40, 965,755.20 and 395,004.80 is: 591,792.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,614.40 : 965,755.20 = 395,004.80 : x
  2. Step 2: Convert to fraction form
    644,614.40/965,755.20 = 395,004.80/x
  3. Step 3: Cross multiply
    644,614.40x = 965,755.20 × 395,004.80
  4. Step 4: Simplify right side
    644,614.40x = 381,477,939,624.96
  5. Step 5: Solve for x
    x = 381,477,939,624.96/644,614.40
  6. Step 6: Final answer
    x = 591,792.46

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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.