Home / 481,550.20-664,649.86-320,412.04

Finding the Fourth Proportional to 481,550.20, 664,649.86 and 320,412.04

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Solution

The fourth proportional to 481,550.20, 664,649.86 and 320,412.04 is: 442,242.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,550.20 : 664,649.86 = 320,412.04 : x
  2. Step 2: Convert to fraction form
    481,550.20/664,649.86 = 320,412.04/x
  3. Step 3: Cross multiply
    481,550.20x = 664,649.86 × 320,412.04
  4. Step 4: Simplify right side
    481,550.20x = 212,961,817,528.31
  5. Step 5: Solve for x
    x = 212,961,817,528.31/481,550.20
  6. Step 6: Final answer
    x = 442,242.20

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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.