Home / 638,997.21-881,811.23-352,529.37

Finding the Fourth Proportional to 638,997.21, 881,811.23 and 352,529.37

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Solution

The fourth proportional to 638,997.21, 881,811.23 and 352,529.37 is: 486,487.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,997.21 : 881,811.23 = 352,529.37 : x
  2. Step 2: Convert to fraction form
    638,997.21/881,811.23 = 352,529.37/x
  3. Step 3: Cross multiply
    638,997.21x = 881,811.23 × 352,529.37
  4. Step 4: Simplify right side
    638,997.21x = 310,864,355,608.18
  5. Step 5: Solve for x
    x = 310,864,355,608.18/638,997.21
  6. Step 6: Final answer
    x = 486,487.81

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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.